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SEQUEL is a structured English query language used for accessing data in relational databases. It provides a consistent set of keyword English templates that reflect how people use tables to obtain information. SEQUEL 2 is a unified approach to data definition, manipulation, and control, providing a stand-alone interface for nonspecialists. XQuery and SQL are compared in terms of their query structures and intuitivity for learners.

Proceedings of the 1974 ACM SIGFIDET (now SIGMOD) workshop on Data description, access and control