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ÇѱÛÁ¦¸ñ(Korean Title) |
°ü°èÇü µ¥ÀÌŸº£À̽º ½Ã½ºÅÛ¿¡¼ÀÇ »ç¿ëÀÚ Á¤ÀÇ ÇÔ¼ö Áö¿ø |
¿µ¹®Á¦¸ñ(English Title) |
User-defined Function Support in RDBMSs |
ÀúÀÚ(Author) |
°íÁ¤¹Ì
Á¤Àç¸ñ
±èÇüÁÖ
Jeong-Mee Koh
Jae-Mok Jeong
Hyung-Joo Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 05 NO. 03 PP. 0295 ~ 0304 (1999. 06) |
Çѱ۳»¿ë (Korean Abstract) |
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¿µ¹®³»¿ë (English Abstract) |
As RDBMS became extended with new functionality, the role of user-defined functions(UDFs) has also been diversified. As well as its performance, DBMS's stability and database's security is more important than before. UDFs are supported using three approaches: static loading, shared library, and process invocation. Shared library approach used in traditional DBMS has an advantage of performance. But it has some flaws including stability, security, and portability. We implemented UDF support by improving process invocation approach. In this paper, we identify some interesting issues of supporting UDFs in RDBMS and measure the performance. Performance test indicates that the difference between our approach and shared library approach in performance is trivial, meanwhile our approach provides several additional advantages.
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