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ADOdb Stable release 5.10 / November 10, 2009; 12 months ago (2009-11-10) Written in PHP, Python Type Database abstraction library License BSD / LGPL Website http://adodb.sourceforge.net/ ADOdb is a database abstraction library for PHP and Python based on the same concept as Microsoft's ActiveX Data Objects. It allows developers to write applications in a fairly consistent way regardless of the underlying database system storing the information. The advantage is that the database system can be changed without re-writing every call to it in the application. Contents 1 Supported Database Systems 2 See also 3 References 4 External links // Supported Database Systems ADOdb supports[1][2] the following databases: ActiveX Data Objects* DB2 Firebird Foxpro FrontBase Informix Interbase LDAP Microsoft Access Microsoft SQL Server MySQL Netezza Oracle PostgreSQL SAP DB SQLite Sybase Teradata Valentina generic ODBC and ODBTP ADOdb uses SQL. Since each database system implements SQL slightly differently, the developer will need to be aware of the database-specific features and functions to avoid if they want to maintain portability. ADOdb provides date conversion functions so that you can create dates in any format and insert them into your SQL in the correct format for your database; which is one step toward database system independent SQL. Some database systems support the Limit phrase which first appeared in MySQL and is now part of SQL. ADOdb's SelectLimit( ) translates limit to different mechanisms for each database system and can emulate limit for database systems with no native limit equivalent. Translations will perform efficiently. Emulations may work slowly by returning too many rows then using only those that meet the limit. ADOdb has variables that contain the correct SQL for a database for specific functions. For example, to check for a null value, null can be replaced with the ADOdb variable that contains the correct SQL definition for null and the check for null will work in every database. See also Free software portal ADOdb Lite PHP Data Objects ADODB_SQL for PHP ADOdb4PHP References ^ Supported Databases - Database Abstraction Library for PHP ADOdb Library for PHP Manual ^ Supported Databases - Database Abstraction Library for Python - ADOdb Library for Python Manual External links ADOdb home page comparison of the database abstraction layers, including ADOdb