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| Category: | General - Books | By: | O'Reilly |
| More info: | www.oreilly.com ... | Author(s): | Rick Copeland |
| Pages: | 215 | Year of publication: | 2008 |
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 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 » Read more... |  |
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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 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 & 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 & 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.
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