A Data Definition and Mapping Language

  title={A Data Definition and Mapping Language},
  author={Edgar H. Sibley and Robert W. Taylor},
  journal={Commun. ACM},
A data definition language is a declarative computer language for specifying data structures. Most data definition languages concentrate on the declaration of logical data structures with little concern for how these structures are physically realized on a computer system. However, the need for data definition languages which describe both the logical and physical aspects of data is increasingly apparent. Such languages will be a key element in the translation of data between computer systems… CONTINUE READING