Artículos de revistas
Definition of CQL, a Visual Query Language
Definition of CQL, a Visual Query Language
Autor
JU, SHI-GUANG
CHAPA, SERGIO V.
Institución
Resumen
WE PRESENT A VISUAL LANGUAGE, CQL, FOR GEOGRAPHIC DATABASE RETRIEVAL. CQL INTRODUCES A NEW VISUAL ELEMENT, CARD, AS ITS PRIMITIVE PICTORIAL ELEMENT. IT A/LOWS THE END USER TO CREATE HIS PROGRAMS VISUALLY AND TO REPRESENT QUERY SENTENCE EXPRESSION IN FULL GRAPHICS. THE SYNTAX AND SEMANTIC OF CQL ARE DESCRIBED IN THIS PAPER. WE PRESENT A VISUAL LANGUAGE, CQL, FOR GEOGRAPHIC DATABASE RETRIEVAL. CQL INTRODUCES A NEW VISUAL ELEMENT, CARD, AS ITS PRIMITIVE PICTORIAL ELEMENT. IT A/LOWS THE END USER TO CREATE HIS PROGRAMS VISUALLY AND TO REPRESENT QUERY SENTENCE EXPRESSION IN FULL GRAPHICS. THE SYNTAX AND SEMANTIC OF CQL ARE DESCRIBED IN THIS PAPER.