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Glossary Term

Glossary
Term
Boolean MGI Glossary
Definition
Refers to an expression that must evaluate to a value of true or false, named for the British mathematician George Boole. In MGI and other databases, Boolean refers to the kind of logical relationship among search terms. Boolean operators include AND, OR, and NOT. For example, searching for all markers of the type "Gene" on Chromosome 2 is equivalent to identifying the union of the two sets:
  1. all markers of the type "Gene" (Type Gene?=true) AND
  2. all markers on Chromosome 2 (Chromosome 2=true).
Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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Send questions and comments to User Support. 		last database update
04/03/2013
MGI 5.12 		The Jackson Laboratory