Table zfindb.informix.mesh_heading Generated by
Primary key columns
Columns with indexes
Implied relationships
Excluded column relationships
< n > number of related tables
Column Type Size Nulls Auto Default Children Parents Comments
mh_pk_id serial8 19  √ 
mesh_heading_qualifier.mhq_mesh_heading_id mhq_mesh_heading_id_foreign_key_odc C
mh_pub_zdb_id varchar 50
publication.zdb_id mesh_heading_pub_foreign_key_odc C
mh_mesht_mesh_descriptor_id varchar 10
mesh_term.mesht_mesh_id mesh_heading_descriptor_foreign_key C
mh_descriptor_is_major_topic boolean 1 f

Table contained 310,130 rows at Thu Jun 22 08:42 PDT 2017

Column(s) Type Sort Constraint Name
mh_descriptor_is_major_topic + mh_mesht_mesh_descriptor_id Performance Asc/Asc mesh_heading_mesh_descriptor_id_foreign_key
mh_descriptor_is_major_topic + mh_pk_id Must be unique Asc/Asc mesh_heading_primary_key_index
mh_descriptor_is_major_topic + mh_pub_zdb_id Performance Asc/Asc mesh_heading_pub_foreign_key_index
mh_descriptor_is_major_topic + mh_pub_zdb_id + mh_mesht_mesh_descriptor_id Must be unique Asc/Asc/Asc mh_alternate_key_index

Close relationships  within of separation: