The table t_xkeyword

This table cross-references the table t_keyword and t_refdb.

xkeyword_id

The unique ID of an t_xkeyword entry is stored as an INT value.

keyword_id

This INT value points to the ID of the keyword in the table t_keyword.

refdb_id

This is the ID of the reference in the t_refdb table, stored as an INT value.