02798nam a2200385 4500 20260818085910.0 310898 th eng .b10027695 AIT Thesis no. CS-91-45 Wiboon Promphanich A deductive object-oriented approach to geographic information systems Bangkok : Asian Institute of Technology, 1991 37 p. Thesis ; no. CS-91-45 A thesis report submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1991 This thesis study is aimed at the proposal of a deductive object-oriented data model which is based upon the specific characteristics and requirements of geographic information systems. Geographic information system is the one which involves the creation, storage, retrieval, browsing and management of electronic form of map entities. Various basic object concepts are formulated under the framework of deductive object-oriented paradigm. In this model the spatial entity are modeled as an instance of subclass of class Point, Line, Polygon or the existing subclasses of these classes. The spatial entity inherits the property of superclass and includes its own properties. These spatial entities are associated with maps. The other type of of the map is overlay which derived from the existing maps. The overlay is modeled as a rule which stored in the intensional database. The model provides the data definition and the data manipulation language. This language is modified from the SQL. The language includes the command for the user to create, insert, delete, and update both the data and the rule. GIS (Computer program) Vilas Wuwongse, Chairperson Zhao, Ming, Examination committee Surapong Auwatanamongkol, Examination committee The Goverment of the Republic of Germany, Scholarship donor Asian Institute of Technology. Thesis ; no. CS-91-45 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17367 .b10027695 mnait x 240409 2 951012 m a x 2 mnait mnarc 20 40 Barcode : 30050003100319 CREATED : 1994-05-16 RECORD # : i10010063 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120353478 CREATED : 2016-09-06 RECORD # : i13028182 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 26157 26157 0 0 0 0 MAIN MAIN mnait 2026-08-18 10.00 0 AIT Thesis no. CS-91-45 30050003100319 2026-08-18 08:59:10 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. CS-91-45 30050120353478 2026-08-18 08:59:10 2026-08-18 40