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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.