Ontydb is a functional-relational database. By functional we mean in the strict mathematical sense of a function as a specific form of relation, rather than functional as in functional programming. The distinction between relations and functions nicely captures ideas about objects and their properties (functions) versus objects in relation to other objects (relations).
This work will be somewhat similar to bitstore, particularly in the use of bitcask, to provide a simple key value store as the underlying storage layer.