From OpenCog

See AtomSpace.

The MindDB is a special part of the Novamente Cognitive Architecture which serves as a global repository of Atoms, spanning the different functionally specialized Novamente Units.
It does not contain all Atoms in the whole system, but contains all Atoms that any Unit thought were interesting enough to share with other Units.
Cognitive Processes in different Units communicate information by means of the MindDB, whereas different Cognitive Processes in the same Unit communicate information more directly, via intra-Unit message passing (e.g. acting on the Atoms in the Unit's AtomTable).

Mind Ontology Links

Supercategory: MindOntology:Concretely Implemented OpenCog Structure