Polypheny

Polypheny is a multi-model DBMS built on top of HSQLDB. The DBMS supports the relational, document and Labeled-Property Graph data models. It also supports multiple query interfaces and languages, SQL and Cypher. The data maintained according to different data models can be combined (e.g., joined) within one query.

Data Model

Relational Document / XML Graph

Query Interface

SQL Cypher HTTP / REST

Polypheny supports their proprietary dialect of SQL called "PolySQL", as well as with compatibility with MongoDB's query language.

Polypheny

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Query Interface

Storage Architecture

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