Check if foreign keys exists — dm_has

These functions are deprecated because of their limited use since the introduction of foreign keys to arbitrary columns in dm 0.2.1. Use dm_get_all_fks() with table manipulation functions instead.

Usage

dm_has_fk(dm, table, ref_table, ...)

dm_get_fk(dm, table, ref_table, ...)

Arguments

dm: A dm object.
table: A table in the dm.
ref_table: The table which table will be referencing.
...: These dots are for future extensions and must be empty.