WOL: A Language for Database Transformations and Constraints

The need to transform data between heterogeneous databases arises from a number of critical tasks in data management. These tasks are complicated by schema evolution in the underlying databases, and by the presence of non-standard database constraints. We describe a declarative language, WOL, for specifying such transformations, and its implementation in a system called Morphase. WOL is designed to allow transformations between the complex data structures which arise in object-oriented databases as well as in complex relational databases, and to allow for reasoning about the interactions between database transformations and constraints.

• Type: Conference
• Year: 1997
• Where: ICDE
• Authors: Susan B. Davidson, Anthony Kosky
• Keywords: Complex Relational Databases, Database, Heterogeneous Databases Arises, ICDE 1997, Non-standard Database Constraints