Computer Supported Query Formulation in an Evolving Context.
Arthur H. M. ter Hofstede, Henderik Alex Proper, Theo P. van der Weide · 1995
Even if high-level query languages are used, query formulation may cause problems. This is notably so in case of large and complex application domains. Typical examples of these kinds of application domains are evolving application domains. In an evolving application domain not only populations may change, but also the conceptual schema. Even more, the history of the application domain should be recorded, and be retrievable. This paper focuses on support for query formulation in the context of large conceptual schemata. The solution presented uses the idea of query-by-navigation in conjunction with query-by-construction. First this idea is illustrated by means of some examples, then it is formally defined. 1 Introduction Nowadays a large number of organisations use automated information systems. A large body of vital corporate information is stored in these information systems. As important decisions are to be based on this information, a primary function of information system...