Specifying Database Transformations in WOL

WOL is a Horn-clause language for specifying transformations involving complex types and recursive data-structures. Its declarative syntax makes programs easy to modify in response to schema evolution; the ability to specify partial clauses facilitates transformations when schemas are very large and data is drawn from multiple sources; and the inclusion of constraints enables a number of optimizations when completing and implementing transformations.

• Type: Journal
• Year: 1999
• Where: DEBU
• Authors: Susan B. Davidson, Anthony Kosky
• Keywords: Complex Types, DEBU 1999, Declarative Syntax, Horn-clause Language