Kappa

Kappa was a parallel DBMS designed for knowledge information processing (KIPS). The name Kappa is an acronym for Knowledge APPlication oriented Advanced DBMS.

History

Kappa was developed as part of the the "Fifth Generation Computer Systems" initiative in the 1980s by Japan's Ministry of International Trade and Industry (MITI) to create computers using massively parallel computing and logic programming.

Data Model

Object-Relational

Kappa uses a "nested relational model" that is similar to the document model in that it supported non-scalar values (e.g., arrays, nested records). It is seen as a precursor to object-relational model.

Parallel Execution

Intra-Operator (Horizontal)

Query Interface

Custom API

System Architecture

Shared-Nothing

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Kappa Logo
Website

https://www.airc.aist.go.jp/aitec-icot/ICOT/Museum/SOFTWARE/KAPPA/outline-E.html

Tech Docs

https://www.airc.aist.go.jp/aitec-icot/ICOT/Museum/SOFTWARE/KAPPA/pdst-E/pdst-E.html

Developer

ICOT

Country of Origin

JP

Start Year

1989

Project Type

Industrial Research

Licenses

Proprietary

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