IGL(ID:4149/atl002)

Geographical query language 

for Interactive Geographic Language

interactive query language for the geographic database system ATLAS

Structures:
Related languages
ATLAS => IGL   subsystem
References:
  • Kasahara, Y., Tsurutani, T. and Naniwada, M. "Geographic Information Concepts" Proc. 20th National Conf. of Japan Information Processing Soc. 1979 (in Japanese) view details
  • Tsurutani, T.; and Kasahara, Y.; and Naniwada, M.; "ATLAS: A geographic database system - data structure and language design for geographic information" view details Abstract: The design concepts and languages of a geographic information system ATLAS (Administration and Total Landuse Analysis Support system) are proposed. The database structure is designed based on the geographic information structure concepts which contain semantic structure, topological structure and location structure. For a flexible user interface, the system provides two languages) IGL (Interactive Geographic Language) and GDDL (Geographic Data Definition Language), whose functions are designed based on the geographic information structure concepts. IGL is an interactive end user language, which facilitates information retrieval under geographic and/or statistic conditions and thematic map production. GDDL is a language for a system manager who constructs and maintains the database.

          in Computer Graphics Volume 14, Number 3, July, 1980 (Proceedings of the 7th International Conference on Computer Graphics and Interactive Techniques Seattle, Washington, United States SIGRAPH 80) view details