About: hierarchical database

Premodifier: hierarchical
Head noun: database

Same concepts
http://dbpedia.org/resource/Hierarchical_database_model

Broader concepts

label	provenance	confidence
retrieval system	isap:485768820	0.659742
datum	isap:363360010	0.584629
type of database	isap:379094074	0.578133
database	isap:63129550	0.513473

Narrower concepts

label	provenance	confidence
database	isap:63129581	0.315623
ldap	isap:457267004	0.307127
ims	isap:329402091	0.296658
filesystem	isap:282650008	0.153369