GQL(ID:4126/gql001)

Began: 1980

Declarative graphical query language based on the functional data model

Anthony Papantonakis and Peter J. H. King
1980

Structures:

Function

References:

Papantonakis, Anthony and King, Peter J. H. "Gql, a declarative graphical query language based on the functional data model" in "Proceedings of the workshop on Advanced visual interfaces" 1994, Bari, Italy pp113 - 122 view details Abstract: We present in this paper Gql, a declarative graphical query language based on the functional data model. Gql queries are fully represented by a single diagram. Without containing any explicit boolean operators or logical quantifiers, Gql provides users of varying degrees of programming experience, with the same expressive power for retrieval as SQL. The design philosophy and characteristics of the language are discussed, and an informal presentation of Gql's constructs and semantics is given. Finally, gql_int, the implementation of an interface for the language, is described.