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Table pub.mgd.mgi_relationship
A record in this table represents a relationship, of a particular category, between any two objects with an MGI Type. For example a relationship between two Markers or a relationship between an Allele and a Marker.
See MGI_Relationship_Category

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
_relationship_key serial 10  √  nextval('mgi_relationship_seq'::regclass)
mgi_relationship_property._relationship_key mgi_relationship_property__relationship_key_fkey C
Primary key
_category_key int4 10
mgi_relationship_category._category_key mgi_relationship__category_key_fkey R
The category, or type, of this relationship
_object_key_1 int4 10 First object in the relationship
_object_key_2 int4 10 Second object in the relationship
_relationshipterm_key int4 10
voc_term._term_key mgi_relationship__relationshipterm_key_fkey R
The term identifying the relationship between the two objects
_qualifier_key int4 10
voc_term._term_key mgi_relationship__qualifier_key_fkey R
The term for the relationship qualifier
_evidence_key int4 10
voc_term._term_key mgi_relationship__evidence_key_fkey R
The term for the relationship evidence
_refs_key int4 10
bib_refs._refs_key mgi_relationship__refs_key_fkey R
The relationship reference
_createdby_key int4 10 1001
mgi_user._user_key mgi_relationship__createdby_key_fkey R
user who created the record
_modifiedby_key int4 10 1001
mgi_user._user_key mgi_relationship__modifiedby_key_fkey R
user who last modified the record
creation_date timestamp 29,6 now() date record was created
modification_date timestamp 29,6 now() date record was last modified

Table contained 4,798,810 rows at Mon Sep 11 06:12 EDT 2023

Column(s) Type Sort Constraint Name
_relationship_key Primary key, Used to cluster data Asc mgi_relationship_pkey
_category_key Performance Asc mgi_relationship_idx_category_key
_object_key_1 + _object_key_2 Performance Asc/Asc mgi_relationship_idx_clustered
_createdby_key Performance Asc mgi_relationship_idx_createdby_key
_evidence_key Performance Asc mgi_relationship_idx_evidence_key
_modifiedby_key Performance Asc mgi_relationship_idx_modifiedby_key
_object_key_2 Performance Asc mgi_relationship_idx_object_key_2
_qualifier_key Performance Asc mgi_relationship_idx_qualifier_key
_refs_key Performance Asc mgi_relationship_idx_refs_key
_relationshipterm_key Performance Asc mgi_relationship_idx_relationshipterm_key

Close relationships  within of separation: