Abstract
A universal relation language interface for the relational database management system is presented. The interface allows the user to query the database as if all of the data were stored in a single relation. The user only needs to apply the appropriate selection criteria and indicate the desired attributes. The universal relation interface serves as a bridge between the users and the relational database system. A universal query must be translated to a query that reflects the stored database. We present a new scheme for generating the join sequence that includes the selection criteria and the desired attributes, from the stored database. In addition, we provide an algorithm for testing the lossless join property of the generated join sequence.
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