[help me]tell me the method to access database?

MIME '''''' '''' ''''' 'Դ''. --------------E1E4273A6031E1AA138E02E7 Content-Type: text/plain; charset=EUC-KR Content-Transfer-Encoding: 7bit I have three database and many tables.. In my project, the access program to database is required. this program has general functions. that is, arbitrary databases, arbitrary tables, and arbitrary fields. example) DB_access( database name, table name , field name, constraint , ...) please help me. If you know the method to make this function, tell me that.. i use c language and informix dbms. --------------E1E4273A6031E1AA138E02E7 Content-Type: text/x-vcard; charset=EUC-KR; name="vcard.vcf" Content-Transfer-Encoding: 7bit Content-Description: HEO SI YOUNG ī'' Content-Disposition: attachment; filename="vcard.vcf" begin: vcard fn: HEO SI YOUNG n: ;HEO SI YOUNG org: Korea Telecom adr;dom: 17 Woomyun Dong Seocho-gu;;Seoul. 137-792 Korea;;;; email;internet: syheo@rcunix.kotel.co.kr title: Member of Technical Staff tel;work: +82-2-526-6669 tel;fax: +82-2-526-6827 x-mozilla-cpt: ;0 x-mozilla-html: FALSE version: 2.1 end: vcard --------------E1E4273A6031E1AA138E02E7--