odbc_foreignkeys

Returns a list of foreign keys in the specified table or a list of foreign keys in other tables that refer to the primary key in the specified table (PHP 4, PHP 5)
resource odbc_foreignkeys ( resource connection_id, string pk_qualifier, string pk_owner, string pk_table, string fk_qualifier, string fk_owner, string fk_table )

odbc_foreignkeys() retrieves information about foreign keys. Returns an ODBC result identifier or FALSE on failure.

The result set has the following columns:

PKTABLE_QUALIFIER
PKTABLE_OWNER
PKTABLE_NAME
PKCOLUMN_NAME
FKTABLE_QUALIFIER
FKTABLE_OWNER
FKTABLE_NAME
FKCOLUMN_NAME
KEY_SEQ
UPDATE_RULE
DELETE_RULE
FK_NAME
PK_NAME

If pk_table contains a table name, odbc_foreignkeys() returns a result set containing the primary key of the specified table and all of the foreign keys that refer to it.

If fk_table contains a table name, odbc_foreignkeys() returns a result set containing all of the foreign keys in the specified table and the primary keys (in other tables) to which they refer.

If both pk_table and fk_table contain table names, odbc_foreignkeys() returns the foreign keys in the table specified in fk_table that refer to the primary key of the table specified in pk_table. This should be one key at most.

Examples ( Source code ) » odbc_foreignkeys


<?php

    /*

    ** This script tests the functions that return meta data.

    ** Note the slightly tricky use of the ternary operator.

    */

    $catalog = "DB";

    $schema = "";



    //connect to database

    $Link = odbc_connect("mysql-navioo", "phpUser", "");



    print("<h1>odbc_columns</h1>");

    $Result = @odbc_columns($Link, "", "", "item");

    $Result ? odbc_result_all($Result) : print('Unsupported');



    print("<h1>odbc_foreignkeys</h1>");

    $Result = @odbc_foreignkeys($Link, $catalog, $schema, "user");

    $Result ? odbc_result_all($Result) : print('Unsupported');



 //close connection

    odbc_close($Link);

?>

odbc_foreignkeys

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