Abstract

Our is one of many organizations which have adopted the SQL language for use with their database systems. Since portability is a major requirement in our work, we must know how the emerging ISO working draft standard for SQL and the implementation of SQL in INGRES 4.0, the DBMS we have selected, differ. In particular, we must learn which features in INGRES are not part of the standard, and which features of the ISO standard have not been implemented in INGRES.This report is a comparison between the ISO working draft standard for the SQL2 database language (ISO TC97/SC21 N1479) and INGRES (release 4.0) SQL. The comparison is not a complete and detailed list of the differences between INGRES SQL and the working draft standard. Rather it attempts to highlight the major differences between the two.

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