About: columnar database

Premodifier: columnar
Head noun: database

Same concepts
http://dbpedia.org/resource/Column-oriented_DBMS

Broader concepts

label	provenance	confidence
technology	isap:179983651	0.510660

Narrower concepts

label	provenance	confidence
hp vertica	isap:45206643	0.565304
vertica	isap:45206639	0.433600
hbase	isap:294945349	0.317329
paraccel	isap:61151114	0.310363