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Table pub.mgd.mrk_history
A record in this table represents a nomenclature event in the life of a Marker. A nomenclature event is defined by the event itself (rename, merge, split, etc.), the reason for the event, date of the event, reference (J:).

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
_assoc_key serial 10  √  nextval('mrk_history_seq'::regclass)
seq_source_assoc._assoc_key Implied Constraint R
_marker_key int4 10
mrk_marker._marker_key mrk_history__marker_key_fkey C
foreign key to MRK_Marker
_marker_event_key int4 10
voc_term._term_key mrk_history__marker_event_key_fkey R
foreign key to VOC_Term
_marker_eventreason_key int4 10
voc_term._term_key mrk_history__marker_eventreason_key_fkey R
foreign key to VOC_Term
_history_key int4 10
mrk_marker._marker_key mrk_history__history_key_fkey C
foreign key to MRK_Marker
_refs_key int4 10  √  null
bib_refs._refs_key mrk_history__refs_key_fkey R
foreign key to BIB_Refs
sequencenum int4 10 sequence number of the event
name text 2147483647  √  null name of the symbol
event_date timestamp 29,6  √  now() date of the nomenclature event
_createdby_key int4 10 1001
mgi_user._user_key mrk_history__createdby_key_fkey R
user who created the record
_modifiedby_key int4 10 1001
mgi_user._user_key mrk_history__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 817,702 rows at Mon Sep 11 06:12 EDT 2023

Column(s) Type Sort Constraint Name
_assoc_key Primary key, Used to cluster data Asc mrk_history_pkey
_createdby_key Performance Asc mrk_history_idx_createdby_key
creation_date Performance Asc mrk_history_idx_creation_date
event_date Performance Asc mrk_history_idx_event_date
_history_key Performance Asc mrk_history_idx_history_key
_marker_event_key Performance Asc mrk_history_idx_marker_event_key
_marker_eventreason_key Performance Asc mrk_history_idx_marker_eventreason_key
_marker_key Performance Asc mrk_history_idx_marker_key
modification_date Performance Asc mrk_history_idx_modification_date
_modifiedby_key Performance Asc mrk_history_idx_modifiedby_key
_refs_key Performance Asc mrk_history_idx_refs_key

Close relationships  within of separation: