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Jonathan Steinmann
44 lines
1.4 KiB
ReStructuredText
44 lines
1.4 KiB
ReStructuredText
Databases
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=========
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DB-API
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------
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The Python Database API (DB-API) defines a standard interface for Python
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database access modules. It's documented in :pep:`249`.
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Nearly all Python database modules such as `sqlite3`, `psycopg` and
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`mysql-python` conform to this interface.
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Tutorials that explain how to work with modules that conform to this interface can be found
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`here <http://halfcooked.com/presentations/osdc2006/python_databases.html>`__ and
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`here <http://web.archive.org/web/20120815130844/http://www.amk.ca/python/writing/DB-API.html>`__.
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SQLAlchemy
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----------
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`SQLAlchemy <http://www.sqlalchemy.org/>`_ is a commonly used database toolkit.
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Unlike many database libraries it not only provides an ORM layer but also a
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generalized API for writing database-agnostic code without SQL.
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::
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pip install sqlalchemy
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Django ORM
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----------
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The Django ORM is the interface used by `Django <http://www.djangoproject.com>`_
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to provide database access.
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It's based on the idea of `models <https://docs.djangoproject.com/en/1.3/#the-model-layer>`_, an abstraction that makes it easier to
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manipulate data in Python.
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The basics:
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- Each model is a Python class that subclasses django.db.models.Model.
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- Each attribute of the model represents a database field.
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- Django gives you an automatically-generated database-access API; see `Making queries <https://docs.djangoproject.com/en/dev/topics/db/queries/>`__.
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to provide database access.
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