diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..1285e67
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,2 @@
+**/__pycache__
+venve
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..899ef6c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+**/__pycache__
+venv
+.pytest_cache
\ No newline at end of file
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..23c3c66
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,18 @@
+repos:
+-   repo: local
+    hooks:
+    - id: pytest
+      name: pytest
+      language: system
+      entry: pytest -v
+      always_run: true
+      pass_filenames: false
+      stages: [commit]
+-   repo: local
+    hooks:
+      - id: requirements
+        name: requirements
+        entry: bash -c 'venv/bin/pip3 freeze > requirements.txt; git add requirements.txt'
+        language: system
+        pass_filenames: false
+        stages: [commit]
diff --git a/.pylintrc b/.pylintrc
new file mode 100644
index 0000000..f64a70f
--- /dev/null
+++ b/.pylintrc
@@ -0,0 +1,634 @@
+[MAIN]
+
+# Analyse import fallback blocks. This can be used to support both Python 2 and
+# 3 compatible code, which means that the block might have code that exists
+# only in one or another interpreter, leading to false positives when analysed.
+analyse-fallback-blocks=no
+
+# Clear in-memory caches upon conclusion of linting. Useful if running pylint
+# in a server-like mode.
+clear-cache-post-run=no
+
+# Load and enable all available extensions. Use --list-extensions to see a list
+# all available extensions.
+#enable-all-extensions=
+
+# In error mode, messages with a category besides ERROR or FATAL are
+# suppressed, and no reports are done by default. Error mode is compatible with
+# disabling specific errors.
+#errors-only=
+
+# Always return a 0 (non-error) status code, even if lint errors are found.
+# This is primarily useful in continuous integration scripts.
+#exit-zero=
+
+# A comma-separated list of package or module names from where C extensions may
+# be loaded. Extensions are loading into the active Python interpreter and may
+# run arbitrary code.
+extension-pkg-allow-list=
+
+# A comma-separated list of package or module names from where C extensions may
+# be loaded. Extensions are loading into the active Python interpreter and may
+# run arbitrary code. (This is an alternative name to extension-pkg-allow-list
+# for backward compatibility.)
+extension-pkg-whitelist=
+
+# Return non-zero exit code if any of these messages/categories are detected,
+# even if score is above --fail-under value. Syntax same as enable. Messages
+# specified are enabled, while categories only check already-enabled messages.
+fail-on=
+
+# Specify a score threshold under which the program will exit with error.
+fail-under=10
+
+# Interpret the stdin as a python script, whose filename needs to be passed as
+# the module_or_package argument.
+#from-stdin=
+
+# Files or directories to be skipped. They should be base names, not paths.
+ignore=CVS
+
+# Add files or directories matching the regular expressions patterns to the
+# ignore-list. The regex matches against paths and can be in Posix or Windows
+# format. Because '\\' represents the directory delimiter on Windows systems,
+# it can't be used as an escape character.
+ignore-paths=
+
+# Files or directories matching the regular expression patterns are skipped.
+# The regex matches against base names, not paths. The default value ignores
+# Emacs file locks
+ignore-patterns=^\.#
+
+# List of module names for which member attributes should not be checked
+# (useful for modules/projects where namespaces are manipulated during runtime
+# and thus existing member attributes cannot be deduced by static analysis). It
+# supports qualified module names, as well as Unix pattern matching.
+ignored-modules=
+
+# Python code to execute, usually for sys.path manipulation such as
+# pygtk.require().
+#init-hook=
+
+# Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
+# number of processors available to use, and will cap the count on Windows to
+# avoid hangs.
+jobs=1
+
+# Control the amount of potential inferred values when inferring a single
+# object. This can help the performance when dealing with large functions or
+# complex, nested conditions.
+limit-inference-results=100
+
+# List of plugins (as comma separated values of python module names) to load,
+# usually to register additional checkers.
+load-plugins=
+
+# Pickle collected data for later comparisons.
+persistent=yes
+
+# Minimum Python version to use for version dependent checks. Will default to
+# the version used to run pylint.
+py-version=3.10
+
+# Discover python modules and packages in the file system subtree.
+recursive=no
+
+# Add paths to the list of the source roots. Supports globbing patterns. The
+# source root is an absolute path or a path relative to the current working
+# directory used to determine a package namespace for modules located under the
+# source root.
+source-roots=
+
+# When enabled, pylint would attempt to guess common misconfiguration and emit
+# user-friendly hints instead of false-positive error messages.
+suggestion-mode=yes
+
+# Allow loading of arbitrary C extensions. Extensions are imported into the
+# active Python interpreter and may run arbitrary code.
+unsafe-load-any-extension=no
+
+# In verbose mode, extra non-checker-related info will be displayed.
+#verbose=
+
+
+[BASIC]
+
+# Naming style matching correct argument names.
+argument-naming-style=snake_case
+
+# Regular expression matching correct argument names. Overrides argument-
+# naming-style. If left empty, argument names will be checked with the set
+# naming style.
+#argument-rgx=
+
+# Naming style matching correct attribute names.
+attr-naming-style=snake_case
+
+# Regular expression matching correct attribute names. Overrides attr-naming-
+# style. If left empty, attribute names will be checked with the set naming
+# style.
+#attr-rgx=
+
+# Bad variable names which should always be refused, separated by a comma.
+bad-names=foo,
+          bar,
+          baz,
+          toto,
+          tutu,
+          tata
+
+# Bad variable names regexes, separated by a comma. If names match any regex,
+# they will always be refused
+bad-names-rgxs=
+
+# Naming style matching correct class attribute names.
+class-attribute-naming-style=any
+
+# Regular expression matching correct class attribute names. Overrides class-
+# attribute-naming-style. If left empty, class attribute names will be checked
+# with the set naming style.
+#class-attribute-rgx=
+
+# Naming style matching correct class constant names.
+class-const-naming-style=UPPER_CASE
+
+# Regular expression matching correct class constant names. Overrides class-
+# const-naming-style. If left empty, class constant names will be checked with
+# the set naming style.
+#class-const-rgx=
+
+# Naming style matching correct class names.
+class-naming-style=PascalCase
+
+# Regular expression matching correct class names. Overrides class-naming-
+# style. If left empty, class names will be checked with the set naming style.
+#class-rgx=
+
+# Naming style matching correct constant names.
+const-naming-style=UPPER_CASE
+
+# Regular expression matching correct constant names. Overrides const-naming-
+# style. If left empty, constant names will be checked with the set naming
+# style.
+#const-rgx=
+
+# Minimum line length for functions/classes that require docstrings, shorter
+# ones are exempt.
+docstring-min-length=-1
+
+# Naming style matching correct function names.
+function-naming-style=snake_case
+
+# Regular expression matching correct function names. Overrides function-
+# naming-style. If left empty, function names will be checked with the set
+# naming style.
+#function-rgx=
+
+# Good variable names which should always be accepted, separated by a comma.
+good-names=i,
+           j,
+           k,
+           ex,
+           Run,
+           _
+
+# Good variable names regexes, separated by a comma. If names match any regex,
+# they will always be accepted
+good-names-rgxs=
+
+# Include a hint for the correct naming format with invalid-name.
+include-naming-hint=no
+
+# Naming style matching correct inline iteration names.
+inlinevar-naming-style=any
+
+# Regular expression matching correct inline iteration names. Overrides
+# inlinevar-naming-style. If left empty, inline iteration names will be checked
+# with the set naming style.
+#inlinevar-rgx=
+
+# Naming style matching correct method names.
+method-naming-style=snake_case
+
+# Regular expression matching correct method names. Overrides method-naming-
+# style. If left empty, method names will be checked with the set naming style.
+#method-rgx=
+
+# Naming style matching correct module names.
+module-naming-style=snake_case
+
+# Regular expression matching correct module names. Overrides module-naming-
+# style. If left empty, module names will be checked with the set naming style.
+#module-rgx=
+
+# Colon-delimited sets of names that determine each other's naming style when
+# the name regexes allow several styles.
+name-group=
+
+# Regular expression which should only match function or class names that do
+# not require a docstring.
+no-docstring-rgx=^_
+
+# List of decorators that produce properties, such as abc.abstractproperty. Add
+# to this list to register other decorators that produce valid properties.
+# These decorators are taken in consideration only for invalid-name.
+property-classes=abc.abstractproperty
+
+# Regular expression matching correct type alias names. If left empty, type
+# alias names will be checked with the set naming style.
+#typealias-rgx=
+
+# Regular expression matching correct type variable names. If left empty, type
+# variable names will be checked with the set naming style.
+#typevar-rgx=
+
+# Naming style matching correct variable names.
+variable-naming-style=snake_case
+
+# Regular expression matching correct variable names. Overrides variable-
+# naming-style. If left empty, variable names will be checked with the set
+# naming style.
+#variable-rgx=
+
+
+[CLASSES]
+
+# Warn about protected attribute access inside special methods
+check-protected-access-in-special-methods=no
+
+# List of method names used to declare (i.e. assign) instance attributes.
+defining-attr-methods=__init__,
+                      __new__,
+                      setUp,
+                      asyncSetUp,
+                      __post_init__
+
+# List of member names, which should be excluded from the protected access
+# warning.
+exclude-protected=_asdict,_fields,_replace,_source,_make,os._exit
+
+# List of valid names for the first argument in a class method.
+valid-classmethod-first-arg=cls
+
+# List of valid names for the first argument in a metaclass class method.
+valid-metaclass-classmethod-first-arg=mcs
+
+
+[DESIGN]
+
+# List of regular expressions of class ancestor names to ignore when counting
+# public methods (see R0903)
+exclude-too-few-public-methods=
+
+# List of qualified class names to ignore when counting class parents (see
+# R0901)
+ignored-parents=
+
+# Maximum number of arguments for function / method.
+max-args=5
+
+# Maximum number of attributes for a class (see R0902).
+max-attributes=7
+
+# Maximum number of boolean expressions in an if statement (see R0916).
+max-bool-expr=5
+
+# Maximum number of branch for function / method body.
+max-branches=12
+
+# Maximum number of locals for function / method body.
+max-locals=15
+
+# Maximum number of parents for a class (see R0901).
+max-parents=7
+
+# Maximum number of public methods for a class (see R0904).
+max-public-methods=20
+
+# Maximum number of return / yield for function / method body.
+max-returns=6
+
+# Maximum number of statements in function / method body.
+max-statements=50
+
+# Minimum number of public methods for a class (see R0903).
+min-public-methods=2
+
+
+[EXCEPTIONS]
+
+# Exceptions that will emit a warning when caught.
+overgeneral-exceptions=builtins.BaseException,builtins.Exception
+
+
+[FORMAT]
+
+# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
+expected-line-ending-format=
+
+# Regexp for a line that is allowed to be longer than the limit.
+ignore-long-lines=^\s*(# )?<?https?://\S+>?$
+
+# Number of spaces of indent required inside a hanging or continued line.
+indent-after-paren=4
+
+# String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
+# tab).
+indent-string='    '
+
+# Maximum number of characters on a single line.
+max-line-length=100
+
+# Maximum number of lines in a module.
+max-module-lines=1000
+
+# Allow the body of a class to be on the same line as the declaration if body
+# contains single statement.
+single-line-class-stmt=no
+
+# Allow the body of an if to be on the same line as the test if there is no
+# else.
+single-line-if-stmt=no
+
+
+[IMPORTS]
+
+# List of modules that can be imported at any level, not just the top level
+# one.
+allow-any-import-level=
+
+# Allow explicit reexports by alias from a package __init__.
+allow-reexport-from-package=no
+
+# Allow wildcard imports from modules that define __all__.
+allow-wildcard-with-all=no
+
+# Deprecated modules which should not be used, separated by a comma.
+deprecated-modules=
+
+# Output a graph (.gv or any supported image format) of external dependencies
+# to the given file (report RP0402 must not be disabled).
+ext-import-graph=
+
+# Output a graph (.gv or any supported image format) of all (i.e. internal and
+# external) dependencies to the given file (report RP0402 must not be
+# disabled).
+import-graph=
+
+# Output a graph (.gv or any supported image format) of internal dependencies
+# to the given file (report RP0402 must not be disabled).
+int-import-graph=
+
+# Force import order to recognize a module as part of the standard
+# compatibility libraries.
+known-standard-library=
+
+# Force import order to recognize a module as part of a third party library.
+known-third-party=enchant
+
+# Couples of modules and preferred modules, separated by a comma.
+preferred-modules=
+
+
+[LOGGING]
+
+# The type of string formatting that logging methods do. `old` means using %
+# formatting, `new` is for `{}` formatting.
+logging-format-style=old
+
+# Logging modules to check that the string format arguments are in logging
+# function parameter format.
+logging-modules=logging
+
+
+[MESSAGES CONTROL]
+
+# Only show warnings with the listed confidence levels. Leave empty to show
+# all. Valid levels: HIGH, CONTROL_FLOW, INFERENCE, INFERENCE_FAILURE,
+# UNDEFINED.
+confidence=HIGH,
+           CONTROL_FLOW,
+           INFERENCE,
+           INFERENCE_FAILURE,
+           UNDEFINED
+
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifiers separated by comma (,) or put this
+# option multiple times (only on the command line, not in the configuration
+# file where it should appear only once). You can also use "--disable=all" to
+# disable everything first and then re-enable specific checks. For example, if
+# you want to run only the similarities checker, you can use "--disable=all
+# --enable=similarities". If you want to run only the classes checker, but have
+# no Warning level messages displayed, use "--disable=all --enable=classes
+# --disable=W".
+disable=raw-checker-failed,
+        bad-inline-option,
+        locally-disabled,
+        file-ignored,
+        suppressed-message,
+        useless-suppression,
+        deprecated-pragma,
+        use-implicit-booleaness-not-comparison-to-string,
+        use-implicit-booleaness-not-comparison-to-zero,
+        use-symbolic-message-instead
+
+# Enable the message, report, category or checker with the given id(s). You can
+# either give multiple identifier separated by comma (,) or put this option
+# multiple time (only on the command line, not in the configuration file where
+# it should appear only once). See also the "--disable" option for examples.
+enable=
+
+
+[METHOD_ARGS]
+
+# List of qualified names (i.e., library.method) which require a timeout
+# parameter e.g. 'requests.api.get,requests.api.post'
+timeout-methods=requests.api.delete,requests.api.get,requests.api.head,requests.api.options,requests.api.patch,requests.api.post,requests.api.put,requests.api.request
+
+
+[MISCELLANEOUS]
+
+# List of note tags to take in consideration, separated by a comma.
+notes=FIXME,
+      XXX,
+      TODO
+
+# Regular expression of note tags to take in consideration.
+notes-rgx=
+
+
+[REFACTORING]
+
+# Maximum number of nested blocks for function / method body
+max-nested-blocks=5
+
+# Complete name of functions that never returns. When checking for
+# inconsistent-return-statements if a never returning function is called then
+# it will be considered as an explicit return statement and no message will be
+# printed.
+never-returning-functions=sys.exit,argparse.parse_error
+
+
+[REPORTS]
+
+# Python expression which should return a score less than or equal to 10. You
+# have access to the variables 'fatal', 'error', 'warning', 'refactor',
+# 'convention', and 'info' which contain the number of messages in each
+# category, as well as 'statement' which is the total number of statements
+# analyzed. This score is used by the global evaluation report (RP0004).
+evaluation=max(0, 0 if fatal else 10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10))
+
+# Template used to display messages. This is a python new-style format string
+# used to format the message information. See doc for all details.
+msg-template=
+
+# Set the output format. Available formats are: text, parseable, colorized,
+# json2 (improved json format), json (old json format) and msvs (visual
+# studio). You can also give a reporter class, e.g.
+# mypackage.mymodule.MyReporterClass.
+#output-format=
+
+# Tells whether to display a full report or only the messages.
+reports=no
+
+# Activate the evaluation score.
+score=yes
+
+
+[SIMILARITIES]
+
+# Comments are removed from the similarity computation
+ignore-comments=yes
+
+# Docstrings are removed from the similarity computation
+ignore-docstrings=yes
+
+# Imports are removed from the similarity computation
+ignore-imports=yes
+
+# Signatures are removed from the similarity computation
+ignore-signatures=yes
+
+# Minimum lines number of a similarity.
+min-similarity-lines=4
+
+
+[SPELLING]
+
+# Limits count of emitted suggestions for spelling mistakes.
+max-spelling-suggestions=4
+
+# Spelling dictionary name. No available dictionaries : You need to install
+# both the python package and the system dependency for enchant to work.
+spelling-dict=
+
+# List of comma separated words that should be considered directives if they
+# appear at the beginning of a comment and should not be checked.
+spelling-ignore-comment-directives=fmt: on,fmt: off,noqa:,noqa,nosec,isort:skip,mypy:
+
+# List of comma separated words that should not be checked.
+spelling-ignore-words=
+
+# A path to a file that contains the private dictionary; one word per line.
+spelling-private-dict-file=
+
+# Tells whether to store unknown words to the private dictionary (see the
+# --spelling-private-dict-file option) instead of raising a message.
+spelling-store-unknown-words=no
+
+
+[STRING]
+
+# This flag controls whether inconsistent-quotes generates a warning when the
+# character used as a quote delimiter is used inconsistently within a module.
+check-quote-consistency=no
+
+# This flag controls whether the implicit-str-concat should generate a warning
+# on implicit string concatenation in sequences defined over several lines.
+check-str-concat-over-line-jumps=no
+
+
+[TYPECHECK]
+
+# List of decorators that produce context managers, such as
+# contextlib.contextmanager. Add to this list to register other decorators that
+# produce valid context managers.
+contextmanager-decorators=contextlib.contextmanager
+
+# List of members which are set dynamically and missed by pylint inference
+# system, and so shouldn't trigger E1101 when accessed. Python regular
+# expressions are accepted.
+generated-members=
+
+# Tells whether to warn about missing members when the owner of the attribute
+# is inferred to be None.
+ignore-none=yes
+
+# This flag controls whether pylint should warn about no-member and similar
+# checks whenever an opaque object is returned when inferring. The inference
+# can return multiple potential results while evaluating a Python object, but
+# some branches might not be evaluated, which results in partial inference. In
+# that case, it might be useful to still emit no-member and other checks for
+# the rest of the inferred objects.
+ignore-on-opaque-inference=yes
+
+# List of symbolic message names to ignore for Mixin members.
+ignored-checks-for-mixins=no-member,
+                          not-async-context-manager,
+                          not-context-manager,
+                          attribute-defined-outside-init
+
+# List of class names for which member attributes should not be checked (useful
+# for classes with dynamically set attributes). This supports the use of
+# qualified names.
+ignored-classes=optparse.Values,thread._local,_thread._local,argparse.Namespace
+
+# Show a hint with possible names when a member name was not found. The aspect
+# of finding the hint is based on edit distance.
+missing-member-hint=yes
+
+# The minimum edit distance a name should have in order to be considered a
+# similar match for a missing member name.
+missing-member-hint-distance=1
+
+# The total number of similar names that should be taken in consideration when
+# showing a hint for a missing member.
+missing-member-max-choices=1
+
+# Regex pattern to define which classes are considered mixins.
+mixin-class-rgx=.*[Mm]ixin
+
+# List of decorators that change the signature of a decorated function.
+signature-mutators=
+
+
+[VARIABLES]
+
+# List of additional names supposed to be defined in builtins. Remember that
+# you should avoid defining new builtins when possible.
+additional-builtins=
+
+# Tells whether unused global variables should be treated as a violation.
+allow-global-unused-variables=yes
+
+# List of names allowed to shadow builtins
+allowed-redefined-builtins=
+
+# List of strings which can identify a callback function by name. A callback
+# name must start or end with one of those strings.
+callbacks=cb_,
+          _cb
+
+# A regular expression matching the name of dummy variables (i.e. expected to
+# not be used).
+dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_
+
+# Argument names that match this expression will be ignored.
+ignored-argument-names=_.*|^ignored_|^unused_
+
+# Tells whether we should check for unused import in __init__ files.
+init-import=no
+
+# List of qualified module names which can have objects that can redefine
+# builtins.
+redefining-builtins-modules=six.moves,past.builtins,future.builtins,builtins,io
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..4090dd6
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,16 @@
+# syntax=docker/dockerfile:1
+
+FROM python:3.10-slim-buster
+
+WORKDIR /app
+ENV FLASK_APP main.py
+
+COPY requirements.txt requirements.txt
+RUN pip install -r requirements.txt
+
+COPY . .
+
+RUN python criar_banco.py
+
+CMD ["python3", "-m", "flask", "run", "--host=0.0.0.0"]
+
diff --git a/README.md b/README.md
index 817b8c7..d2909f0 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,39 @@
-# Venha para Recomb
+# VENHA PARA RECOMB
+
+
+Instruções:
+
+### CRIAR IMAGEM DOCKER
+```
+$ docker build --tag recomb .
+```
+
+### EXECUTAR CONTAINER
+```
+$ docker run --rm -p 5000:5000 recomb
+```
+
+### ABRIR ENDEREÇO LOCAL NO NAVEGADOR
+http://127.0.0.1:5000/
+
+`Selecionar arquivo .xml`
+
+`Enviar arquivo`
+
+#
+~ 🖥 TECNOLOGIAS USADAS 🖥 ~
+- CSS3
+- Docker
+- Flask
+- HTML5
+- Jinja2
+- Python 3.10
+- SQLAlchemy
+- SQLite
+
+  #
+
+# DESAFIO:
 
 O desafio é desenvolver um programa que permita realizar as seguintes buscas:
 
diff --git a/criar_banco.py b/criar_banco.py
new file mode 100644
index 0000000..57faf26
--- /dev/null
+++ b/criar_banco.py
@@ -0,0 +1,7 @@
+'''Creates the database with tables referring to the defined classes''' 
+from recomb import database, app
+from recomb.models import Fornecedor, Cliente, Endereco, Nota
+
+with app.app_context():
+    database.create_all()
+    
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..a7c6146
--- /dev/null
+++ b/main.py
@@ -0,0 +1,6 @@
+'''Main file to start the application'''
+
+from recomb import app
+
+if __name__ == "__main__":
+    app.run(debug=True)
diff --git a/recomb/__init__.py b/recomb/__init__.py
new file mode 100644
index 0000000..f5395a7
--- /dev/null
+++ b/recomb/__init__.py
@@ -0,0 +1,13 @@
+'''Defines the app and configures the connection to the database 
+and secret key for reading forms and files'''
+
+from flask import Flask
+from flask_sqlalchemy import SQLAlchemy
+
+app = Flask(__name__)
+app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///bancodedados.db"
+app.config["SECRET_KEY"] = "aaeee19c0e0f4c5b6d081f66c6dd56ef"
+
+database = SQLAlchemy(app)
+
+from recomb import routes
diff --git a/recomb/__pycache__/__init__.cpython-310.pyc b/recomb/__pycache__/__init__.cpython-310.pyc
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diff --git a/recomb/__pycache__/models.cpython-310.pyc b/recomb/__pycache__/models.cpython-310.pyc
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diff --git a/recomb/__pycache__/routes.cpython-310.pyc b/recomb/__pycache__/routes.cpython-310.pyc
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diff --git a/recomb/forms.py b/recomb/forms.py
new file mode 100644
index 0000000..b393d7f
--- /dev/null
+++ b/recomb/forms.py
@@ -0,0 +1,10 @@
+'''Creates the form to send the file'''
+from flask_wtf import FlaskForm
+from wtforms import SubmitField, FileField
+from wtforms.validators import DataRequired
+
+class FormNFe(FlaskForm):
+    '''Class representing the form for file selection and the submit button.'''
+    botao_NFe = FileField("NFe", validators=[DataRequired()])
+    botao_confirmacao = SubmitField("Enviar")
+    
\ No newline at end of file
diff --git a/recomb/models.py b/recomb/models.py
new file mode 100644
index 0000000..adf3266
--- /dev/null
+++ b/recomb/models.py
@@ -0,0 +1,46 @@
+'''Creates the database structure'''
+from recomb import database
+
+class Fornecedor(database.Model):
+    '''Class representing a supplier'''
+
+    id = database.Column(database.Integer, primary_key=True)
+    nome = database.Column(database.String, nullable=False)
+    documento = database.Column(database.String, nullable=False, unique=True)
+    nota = database.relationship("Nota", backref="fornecedor", lazy=True)
+
+class Cliente(database.Model):
+    '''Class representing a client'''
+
+    id = database.Column(database.Integer, primary_key=True)
+    nome = database.Column(database.String, nullable=False)
+    documento = database.Column(database.String, nullable=False, unique=True)
+    endereco = database.relationship("Endereco", backref="cliente", lazy=True)
+    nota = database.relationship("Nota", backref="cliente", lazy=True)
+
+class Endereco(database.Model):
+    '''Class representing a address'''
+
+    id = database.Column(database.Integer, primary_key=True)
+    rua = database.Column(database.String, nullable=False)
+    num = database.Column(database.Integer, nullable=False)
+    bairro = database.Column(database.String, nullable=False)
+    municipio = database.Column(database.String, nullable=False)
+    uf = database.Column(database.String, nullable=False)
+    cep = database.Column(database.String, nullable=False)
+    pais = database.Column(database.String, nullable=False)
+    telefone = database.Column(database.Integer, nullable=False)
+    id_cliente = database.Column(database.Integer, database.ForeignKey('cliente.id'),
+                                 nullable=False)
+
+class Nota(database.Model):
+    '''Class representing a invoice'''
+
+    id = database.Column(database.Integer, primary_key=True)
+    valor = database.Column(database.Integer, nullable=False)
+    vencimento = database.Column(database.String, nullable=False)
+    num_nota = database.Column(database.Integer, nullable=False)
+    id_cliente = database.Column(database.Integer,
+                                 database.ForeignKey('cliente.id'), nullable=False)
+    id_fornecedor = database.Column(database.Integer,
+                                    database.ForeignKey('fornecedor.id'), nullable=False)
diff --git a/recomb/routes.py b/recomb/routes.py
new file mode 100644
index 0000000..ca90907
--- /dev/null
+++ b/recomb/routes.py
@@ -0,0 +1,98 @@
+'''Creates routes system'''
+from flask import render_template
+import xmltodict
+from recomb import app, database
+from recomb.forms import FormNFe
+from recomb.models import Fornecedor, Cliente, Endereco, Nota
+
+@app.route("/", methods=("GET", "POST"))
+def homepage():
+    '''
+    Function that reads information from the
+
+    .XML file read through the formNFE form
+
+
+    Args: none
+
+    Returns: Form validation for sending the XML file.
+    And all Supplier, Customer, Address and Billing data
+
+    '''
+    form_nfe=FormNFe()
+    if form_nfe.validate_on_submit():
+        nota = form_nfe.botao_NFe.data
+
+        #Converts file data into a python dictionary.
+        dic_nota = xmltodict.parse(nota)
+        #Get only the dictionaries after the infNFE subtree
+        infos_nf = dic_nota["nfeProc"]["NFe"]["infNFe"]
+
+        #Filter to check if the 'Fornecedor' already exists in the database, 
+        # so as not to insert redundant information
+        doc_fornecedor = Fornecedor.query.filter_by(documento=infos_nf['emit']['CNPJ']).first()
+        if not doc_fornecedor:
+            fornecedor = Fornecedor(nome = infos_nf['emit']['xNome'],
+                                    documento = infos_nf['emit']['CNPJ'])
+            database.session.add(fornecedor)
+            database.session.commit()
+            fornecedor_id = fornecedor.id
+        else:
+            #Gets customer data and their respective address directly from the database
+            fornecedor = doc_fornecedor
+        
+        #Filter to check if the 'Cliente' already exists in the database,
+        # so as not to insert redundant information
+        doc_cliente = Cliente.query.filter_by(documento=infos_nf['dest']['CNPJ']).first()
+        if not doc_cliente:
+            cliente = Cliente(nome = infos_nf['dest']['xNome'],
+                          documento = infos_nf['dest']['CNPJ'])
+            database.session.add(cliente)
+            database.session.commit()
+
+            endereco = Endereco(rua = infos_nf['dest']['enderDest']['xLgr'],
+                                num = infos_nf['dest']['enderDest']['nro'],
+                                bairro = infos_nf['dest']['enderDest']['xBairro'],
+                                municipio = infos_nf['dest']['enderDest']['xMun'],
+                                uf = infos_nf['dest']['enderDest']['UF'],
+                                cep = infos_nf['dest']['enderDest']['CEP'],
+                                pais = infos_nf['dest']['enderDest']['xPais'],
+                                telefone = infos_nf['dest']['enderDest']['fone'],
+                                id_cliente = cliente.id)
+            database.session.add(endereco)
+            cliente_id = cliente.id
+        else:
+            #Gets 'cliente' data and their respective address directly from the database
+            cliente = doc_cliente
+            endereco = Endereco.query.filter_by(id_cliente=cliente.id).first()
+        
+        #Filter to check if the 'Nota' already exists in the database,
+        # so as not to insert redundant information
+        doc_nota = Nota.query.filter_by(num_nota=infos_nf['ide']['nNF']).first()
+        if not doc_nota:
+            notas = infos_nf['cobr']['dup']
+
+            #Checks situations in which there is more than one installment
+            # to be paid. In this case the notes variable will be a list of
+            # dictionaries, otherwise it will just be a dictionary
+            if isinstance(notas, list):
+                for i in notas:
+                    nota = Nota()
+                    nota.valor = i['vDup']
+                    nota.vencimento = i['dVenc']
+                    nota.num_nota = infos_nf['ide']['nNF']
+                    nota.id_cliente = cliente_id
+                    nota.id_fornecedor = fornecedor_id
+                    database.session.add(nota)
+                    database.session.commit()
+            else:
+                nota = Nota(valor = notas['vDup'], vencimento = notas['dVenc'],
+                                num_nota = infos_nf['ide']['nNF'], id_cliente = cliente_id,
+                                id_fornecedor = fornecedor_id)
+                database.session.add(nota)
+        else:
+            nota = doc_nota
+        #Add everything to the database
+        database.session.commit()
+        return render_template("homepage.html", form=form_nfe, fornecedor=fornecedor, cliente=cliente, endereco=endereco, nota=nota)
+    return render_template("homepage.html", form=form_nfe)
\ No newline at end of file
diff --git a/recomb/static/css/style.css b/recomb/static/css/style.css
new file mode 100644
index 0000000..52921d5
--- /dev/null
+++ b/recomb/static/css/style.css
@@ -0,0 +1,133 @@
+* {
+  box-sizing: border-box;
+}
+
+body {
+  font-family: Montserrat;
+  color: #333;
+} 
+
+nav {
+  padding: 16px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+h1 {
+  color: rgb(43, 174, 89);
+  font-size: 36px;
+  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
+    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
+  display: inline;
+}
+
+h2 {
+  font-size: 20px;
+  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
+    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
+  display: inline;
+}
+
+.container {
+  display: flex;
+  align-items: center;
+  flex-direction: column;
+  row-gap: 20px;
+}
+
+.botao-nota {
+  border-radius: 22px;
+  padding: 15px 20px;
+  width: 100%;
+  border: 0;
+  text-transform: uppercase;
+  font-weight: bold;
+  cursor: pointer;
+  background-color: rgb(43, 174, 89);
+  color: #fff;
+}
+
+.botao-nota:hover {
+  background-color: #d50c22;
+}
+
+.bloco-logo {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  row-gap: 10px;
+}
+
+.botao-arquivo {
+  padding: 5px 10px;
+  border-radius: 15px;
+  border: 0;
+  background-color: #333;
+  color: #fff;
+  font-size: 16px;
+  cursor: pointer;
+}
+
+.bloco-arquivo {
+  background-color: #eeeeee;
+  padding: 10px 20px;
+  border-radius: 55px;
+  display: flex;
+  align-items: center;
+  column-gap: 10px;
+}
+
+.bloco-logo .botao-nota {
+  width: auto;
+}
+
+.bloco-input-botao {
+  display: flex;
+  column-gap: 20px;
+}
+
+section.modal{
+  position: fixed;
+  top: 0;
+  bottom: 0;
+  right: 0;
+  left: 0;
+  background-color: #00000080;
+  z-index: 1;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  pointer-events: auto;
+}
+
+section.modal div#card{
+  text-align: center; 
+  width: 26rem;
+  position: relative;
+  background-color: #fff;
+  border-radius: .5rem;
+  padding: 1.5rem;
+}
+
+section.modal div#card h2{
+  padding: 2rem;
+  margin: 0;
+  color: #0130ec;
+}
+
+section.modal div#card a#fechar{
+  position: absolute;
+  right: 10px;
+  top: 0;
+  font-family: arial;
+  font-weight: bold;
+  font-size: 1.5rem;
+  cursor: pointer;
+  text-decoration: none;
+  color: black;
+}
+
+section.modal div#card a#fechar:hover{
+  color: #d50c22;
+}
diff --git a/recomb/templates/homepage.html b/recomb/templates/homepage.html
new file mode 100644
index 0000000..8ce3453
--- /dev/null
+++ b/recomb/templates/homepage.html
@@ -0,0 +1,69 @@
+<!DOCTYPE html>
+<html lang="pt-br">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
+
+    <title>Venha para Recomb</title>
+</head>
+
+<body>
+
+    <div class="container">
+        <header>
+          <nav>
+            <div class="bloco-logo">
+                <svg 
+                    viewBox="150.27 175.539 72.102 74.5605"
+                    width="72.102"
+                    height="74.561">
+                    <ellipse style="fill: rgb(43, 174, 89); stroke: rgba(192, 188, 188, 0);" cx="186.321" cy="211.59" rx="36.051" ry="36.051"></ellipse>
+                    <text style="fill: rgb(230, 221, 221); font-family: 'Ink Free'; font-size: 39.5072px; font-weight: 700; line-height: 63.2116px; white-space: pre;" transform="matrix(1.4516130685806274, 0, 0, 1.4680850505828857, -80.53637935329607, -81.78009276926787)" x="173.854" y="213.275">R</text>
+                  </svg>
+              <h1>Venha para Recomb</h1>
+            </div>
+          </nav>
+        </header>
+    
+        <div>
+        <form method="POST" enctype="multipart/form-data", class="bloco-logo">
+          {{ form.csrf_token }}
+          {{ form.hidden_tag() }}
+
+          <h2>Nota Fiscal Eletrônica</h2><br>
+          
+          <div class="bloco-input-botao">
+            <div class="bloco-arquivo">
+                {{ form.botao_NFe(class="botao-arquivo") }}
+            </div>       
+          </div><br>
+        {{ form.botao_confirmacao(class="botao-nota") }}
+
+        {% if fornecedor != undefined %}
+        <section class="modal">
+          <div id="card">
+            <a href="/" id="fechar">x</a>
+            <h2>Nota Fiscal {{nota.num_nota}}</h2>
+            <hr>
+            <p>Fornecedor: {{fornecedor.nome}}</p>
+            <p>CNPJ/CPF: {{fornecedor.documento}}</p>
+            <hr>
+            <p>Cliente: {{cliente.nome}}</p>
+            <p>CNPJ/CPF: {{cliente.documento}}</p>
+            <p>Rua: {{endereco.rua}}, n: {{endereco.num}},
+              Bairro: {{endereco.bairro}}, Município: {{endereco.municipio}},
+              Estado: {{endereco.uf}}, CEP: {{endereco.cep}},
+              País: {{endereco.pais}}, Telefone: {{endereco.telefone}}</p>
+            <hr>         
+              {% for nota in cliente.nota %}
+                <p>Vencimento: {{nota.vencimento}} | 
+                Valor: {{nota.valor}} reais </p>
+              {% endfor %}
+          </div>
+        </section>
+        {% endif %}
+      </div>
+  </body>
+</html>
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..d737e28
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,35 @@
+astroid==3.0.1
+blinker==1.6.3
+cfgv==3.4.0
+click==8.1.7
+dill==0.3.7
+distlib==0.3.7
+exceptiongroup==1.1.3
+filelock==3.12.4
+Flask==3.0.0
+Flask-SQLAlchemy==3.1.1
+Flask-WTF==1.2.1
+greenlet==3.0.0
+identify==2.5.30
+iniconfig==2.0.0
+isort==5.12.0
+itsdangerous==2.1.2
+Jinja2==3.1.2
+MarkupSafe==2.1.3
+mccabe==0.7.0
+nodeenv==1.8.0
+packaging==23.2
+platformdirs==3.11.0
+pluggy==1.3.0
+pre-commit==3.5.0
+pylint==3.0.1
+pytest==7.4.2
+PyYAML==6.0.1
+SQLAlchemy==2.0.22
+tomli==2.0.1
+tomlkit==0.12.1
+typing_extensions==4.8.0
+virtualenv==20.24.5
+Werkzeug==3.0.0
+WTForms==3.1.0
+xmltodict==0.13.0