PCISP

Metabase is a DBMS-independent PHP API to access SQL databases. It supports MySQL, PostgreSQL, Oracle, Microsoft SQL server, Microsoft Access, ODBC, Interbase, Informix, MiniSQL, and SQLite. It supports nested transactions, blobs, and prepared queries. It can install database schemas defined in a DBMS independent XML format that describe tables, indexes, primary keys, and auto-increment sequences. It is also able to upgrade a database to a new schema without affecting the data that was stored since it was installed or upgraded for the last time. There is also schema reverse engineering support.

License: BSD License (original)

Changes:
This release adds support for nested transactions,
i.e. transactions that can be started when another
transaction is already in progress. The database
schema XML parser portability was enhanced to
disallow more table and field names that are
reserved words in several types of databases.
Several minor bugs were fixed.