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Título: A GIS editor for a database programming language /
Autores: Chen, YuLing, 1970-
Fecha: 2001
Publicador: McGill University - MCGILL
Fuente:
Tipo: Electronic Thesis or Dissertation
Tema: Computer Science.
Descripción: Geographical Information Systems (GIS) have become a more and more important application of database systems. Most general-purpose database systems do not contain a graphical display interface which is indispensable in GIS applications. This thesis presents the design and implementation of a GIS editor (Geditor) for a relational database programming language. It builds a graphical map display interface into the database language and integrates a set of GIS functions.
Two interfaces are built in Geditor. One is with the database programmer and the other is with the GIS End-User. The former interface implements a new syntax (gedit) into the database language for the database programmer to call and display the Geditor GUI. The latter implements a GUI with the GIS End-User to view the map and perform a series of fundamental GIS functions.
Geditor stores both spatial and non-spatial data in the relational database. The implementation utilizes the spatial capabilities of the relational database programming language to the largest extent. This demonstrates the feasibility and the simplicity of implementing GIS applications in an integrated approach using relational databases. It also provides a flexible and extendable framework by designing an extendable syntax and utilizing the event handler mechanism which is the characteristic of active databases. Java, especially the JFC Swing package is used extensively in the implementation.
Idioma: en