DMOZ Internet Directory : Computers : Software : Databases : Relational : Implementations : Quasi-relational

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This is reserved for quasi-relational implementations that are still somewhat better than the current state of the art -- meaning, at the moment, anything less in violation of the model than SQL.

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LEAP - An incomplete relational algebra DBMS. [Free software, GNU GPL] System R - The first implementation corrupted from the relational model, was the basis for SQL and DB2. A site preserving early history of a technology that became a critical business tool. FirstSQL - Java in-memory SQL92 DBMS with sane NULLs processing. Purports to actually strive to follow Codd's rules. rdb - A very simple quasi-relational DBMS based on Unix shell commands. NoSQL - Portable relational database management system without arbitrary limits that runs under POSIX operating systems. It uses the Operator-Stream Paradigm. Starbase Data Tables - An ASCII quasi-relational database for POSIX.

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