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# odbc_foreignkeys

(PHP 4, PHP 5)

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

## Description

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.

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