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035			_a.b10027695
099		9	_aAIT Thesis no. CS-91-45
100	0		_aWiboon Promphanich
245	1	2	_aA deductive object-oriented approach to geographic information systems
260			_aBangkok : _bAsian Institute of Technology, _c1991
300			_a37 p.
490	1		_aThesis ; _vno. CS-91-45
500			_aA thesis report submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1991
520			_aThis 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.
650		0	_aGIS (Computer program)
700	0		_aVilas Wuwongse, _eChairperson
700	1		_aZhao, Ming, _eExamination committee
700	0		_aSurapong Auwatanamongkol, _eExamination committee
710	2		_aThe Goverment of the Republic of Germany, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. CS-91-45
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B17367
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