Database Abstraction Layer for PHP https://www.adodb.org/dokuwiki/ 2026-05-17T02:42:57+00:00 https://www.adodb.org/dokuwiki/ https://www.adodb.org/dokuwiki/lib/exe/fetch.php?media=logo.png text/html 2016-03-16T23:52:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.adodb.org/dokuwiki/doku.php?id=v5:userguide:learn_dictionary:introduction&rev=1458172331&do=diff The Data Dictionary This lesson teaches an understanding of the basics of the Data Dictionary text/html 2016-03-20T14:05:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.adodb.org/dokuwiki/doku.php?id=v5:userguide:learn_dictionary:metacolumns&rev=1458482737&do=diff MetaTypes Start Of Lesson Other MetaFunctions MetaColumns The metaColumns method returns an array of adoFieldObject objects that represent the attributes of the columns of a specified table. $m = $db->metaColumns('my_table'); print_r($m); adoFieldObject Object ( [name] => actno [max_length] => 8 [type] => INT ) adoFieldObject Object ( [name] => actname [max_length] => 30 [type] => VARCHAR ) text/html 2026-03-13T17:56:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.adodb.org/dokuwiki/doku.php?id=v5:userguide:learn_dictionary:metatypes&rev=1773424591&do=diff Introduction Start Of Lesson MetaColumns The MetaType The lowest level of information that ADOdb supports is the MetaType. This object represents the type of field in a consistent, simplified format. Actual Types Data is stored in the database in fields that best represent the type of data, e.g. Integer, character, floating point. These types may be subclassed further, e.g Small,Medium,Large integers. In addition, there may be estoric field types such as geometry, points etc. ADOdb refers … text/html 2018-06-11T08:09:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.adodb.org/dokuwiki/doku.php?id=v5:userguide:learn_dictionary:other_metafunctions&rev=1528704584&do=diff MetaColumns Start Of Lesson Other MetaFunctions Other MetaFunctions metaTables() The method metaTables() returns a list of the tables in the database. In some databases, the values returned by the method may be restricted based on built-in security in the DBMS. $ar = $db->metaTables('TABLES'); /* * $ar returns: [0] => DEPT [1] => EMP [2] => EMPACT [3] => EMP_ACT [4] => PROJ [5] => ADEFUSR ...... text/html 2016-03-16T00:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.adodb.org/dokuwiki/doku.php?id=v5:userguide:learn_dictionary:start_lesson&rev=1458088531&do=diff Start Of Lesson Start Of Lesson MetaTypes Introduction ADOdb provides numerous methods that allow the interrogation of the structure of the database from the database level all the way down to the field object. It does so in a way that offers the following assistance: * Provides a simple, consistent interface to the information