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The SQL::Statement module implements a small, abstract SQL engine. By parsing an SQL query you create an SQL::Statement instance. This instance offers methods for retrieving syntax, for WHERE clause and statement evaluation. The implementation is designed to work with the DBI driver DBD::CSV, and should be easily extensible.

Tangram is an object-relational mapper. It makes objects persist in relational databases, and provides powerful facilities for retrieving and filtering them. Tangram fully supports object-oriented programming, including polymorphism, multiple inheritance and collections. It does so in an orthogonal fashion, that is, it doesn't require your classes to implement support functions nor inherit from a utility class.

DB_Pager retrieve and return information of database result sets. This class handles all the stuff needed for displaying paginated results from a database query of Pear DB. including fetching only the needed rows and giving extensive information for helping build an HTML or GTK query result display.

PEAR::DB_Sqlite_Tools is an object oriented interface to effectively manage and backup Sqlite databases.It extends the existing functionality by providing a comprehensive solution for database backup, live replication, export in XML format, performance optmization and other functionalities like the insertion and retrieval of encrypted data from an Sqlite database without any external extension.

PEAR::MDB2_Schema enables users to maintain RDBMS independant schema files in XML that can be used to create, alter and drop database entities and insert data into a database. Reverse engineering database schemas from existing databases is also supported. The format is compatible with both PEAR::MDB and Metabase.

pgAdmin III is a comprehensive PostgreSQL database design and management system for *nix and Windows systems. It is freely available under the terms of the Artistic Licence and may be redistributed provided the terms of the licence are adhered to. The project is managed by the pgAdmin Development Team.

pg_statsinfo is a utility that monitor statistics and the activity of PostgreSQL(and OS). pg_statsinfo gets some statistics information as snapshot. We can check the DB activity and bottleneck analysis by using these snapshot information. This utility provides some function to get the information acquisition easily.

PL/Proxy is a proxy language used for remote database procedure calls and data partitioning between databases based on hashing field values. Main idea is that proxy function will be created with same signature as remote function to be called, so only destination info needs to be specified inside proxy function body.

python-cdb is D. J. Bernstein's constant database library adapted as a python extension module. cdb files are mappings of keys to values, designed for wickedly fast lookups and atomic updates. This module mimics the normal cdb utilities (cdb(get|dump|make)) via convenient high-level Python objects.

py-dbf is a pure python package for reading/writing dBase, FoxPro, and Visual FoxPro .dbf files (including memos). Currently supports dBase III, and FoxPro - Visual FoxPro 6 tables. Text is returned as unicode, and codepage settings in tables are honored. Documentation needs work, but author is very responsive to e-mails.