Relational databases
Data models, database languages and database management systems
Data models, database languages and database management systems
A Guide to DB2
An Evaluation Scheme for Database Management Systems that are claimed to be Relational
Proceedings of the Second International Conference on Data Engineering
A critique of the SQL database language
ACM SIGMOD Record
Theory of Relational Databases
Theory of Relational Databases
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An extension of the database language SQL is described which introduces several new concepts into the language that are standard in the relational model, but surprisingly not present in available SQL-based systems such as SQL/DS and DB2.