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ÇѱÛÁ¦¸ñ(Korean Title) |
³í¸® µ¥ÀÌŸº£À̽º ½Ã½ºÅÛÀÇ ±â´É È®Àå |
¿µ¹®Á¦¸ñ(English Title) |
A Logic Database System with Extended Functions |
ÀúÀÚ(Author) |
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Donghoon Choi
Sanggoo Lee
Sang Ho Lee
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¿ø¹®¼ö·Ïó(Citation) |
VOL 24 NO. 04 PP. 0362 ~ 0372 (1997. 04) |
Çѱ۳»¿ë (Korean Abstract) |
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¿µ¹®³»¿ë (English Abstract) |
A goal of logic databases is to give users more expressive language than the conventional database language and thereby provides application programmers with efficiency of database development. Most researchers in this area have focused on recursive query, integrity constraints, etc. And several prototypes have been developed on the basis of the results. In spite of successful achievement, there are many important issues such as non-Horn data, existential quantifier, semantic query optimization which should be solved to support next-generation applications. We present the architecture and functional details of a logic database system that extends to meet the requirement. The system supports indefinite (non-Horn) facts in the extensional database and existential quantification in intentional database rules to improve expressive power of database language. Semantic query optimization integrity constraint is integrated as part of query processing module. And the system provides a user language to improve usability.
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Å°¿öµå(Keyword) |
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