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Table pub.mgd.mrk_offset
Defines Marker centimorgan (cM) offsets from three different sources: MGD (0), Chromosome Committee (1) and MIT (2).
Offset value of -1.0 designates syntenic marker. Offset value of -999.9 designates withdrawn or reserved marker. All mouse symbols have an MGD offset.

See MRK_Marker.

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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
_marker_key int4 10
mrk_marker._marker_key mrk_offset__marker_key_fkey C
foreign key to MRK_Marker
source int4 10 source of cM position (0 = MGD,1 = Chromosome Committee (CC), 2 = MIT)
cmoffset numeric 131089 approximate centimorgan (cM) position on chromosome
creation_date timestamp 29,6 now() date record was created
modification_date timestamp 29,6 now() date record was last modified

Table contained 298,660 rows at Mon Nov 20 05:26 EST 2017

Indexes:
Column(s) Type Sort Constraint Name
_marker_key + source Primary key, Used to cluster data Asc/Asc mrk_offset_pkey
cmoffset Performance Asc mrk_offset_idx_cmoffset
source Performance Asc mrk_offset_idx_source

Close relationships  within of separation: