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Essential SQLAlchemy
Essential SQLAlchemy introduces a high-level open-source
code library that makes it easier for Python programmers to
access relational databases such as Oracle, DB2, MySQL,
PostgreSQL, and SQLite. SQLAlchemy has become increasingly
popular since its release, but it still lacks good offline
documentation. This practical book
fills the gap, and
because a developer wrote it, you get an objective look at
SQLAlchemy's tools rather than an advocate's description of
all the "cool" features.
SQLAlchemy includes both a database server-independent SQL
expression language and an object-relational mapper (ORM)
that lets you map "plain old Python objects" (POPOs) to
database tables without substantially changing your existing
Python code. Essential SQLAlchemy demonstrates how to use
the library to create a simple database application, walks
you through simple queries, and explains how to use
SQLAlchemy to connect to multiple databases simultaneously
with the same Metadata. You also learn how to:
Create custom types to be used in your schema, and when it's
useful to use custom rather than built-in types
Run queries, updates, and deletes with SQLAlchemy's SQL
expression language
Build an object mapper with SQLAlchemy, and understand the
differences between this and active record patterns used in
other ORMs
Create objects, save them to a session, and flush them to
the database
Use SQLAlchemy to model object oriented inheritance
Provide a declarative, active record pattern for use with
SQLAlchemy using the Elixir extension
Use the SQLSoup extension to provide an automatic metadata
and object model based on database reflection
In addition, you'll learn how and when to use other
extensions to SQLAlchemy, including AssociationProxy,
OrderingList, and more.
Essential SQLAlchemy is the much-needed guide for every
Python developer using this code library. Instead of a
feature-by-feature documentation, this book takes an
"essentials" approach that gives you exactly what you need
to become productive with SQLAlchemy right away.
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