ObjectStore
ObjectStore is a commercial object database , a specialized type of NoSQL database designed to handle data created by applications that use object-oriented programming techniques , avoiding the Object to Relational Mapping overhead required when using object-oriented data with a Relational Database . 
<triplet> ObjectStore <subj> object database <obj> use <triplet> object database <subj> database <obj> subclass of <triplet> Relational Database <subj> database <obj> subclass of