CREATE TABLE I_DONT_LIKE_MASTER
( CODE_TYPE VARCHAR2(4) NOT NULL,
CODE_VALUE VARCHAR2(3) NOT NULL,
CODE_DESC VARCHAR2(20) ,
PRIMARY KEY (CODE_TYPE, CODE_VALUE) )
SPLT N SDFLJDSL
SPLT FP SDFSDKFDS
SPLT OBG SFLSDJFSD
TYPE MD SDFLSDFSDF
TYPE FP SDFJDSFJ
TYPE OPH SDLFJDSKF
CREATE TABLE DOCTOR
(.....,
SPECIALITY_CODE_TYPE VARCHAR2(4),
SPECIALITY_CODE_VALUE VARCHAR2(3),
TYPE_CODE_TYPE VARCHAR2(4),
TYPE_CODE_VALUE VARCHAR2(3),
.....,
foreign key (SPECIALITY_CODE_TYPE,SPECIALITY_CODE_VALUE) references
I_DONT_LIKE_MASTER,
foreign key (TYPE_CODE_TYPE, TYPE_CODE_VALUE ) references
I_DONT_LIKE_MASTER )
D1 SPLT N TYPE OPH
D2 SPLT N TYPE MD
but u can also create surrogate key and make (CODE_TYPE, CODE_VALUE) as
alternate key (unique) and then reference the surrogate key in ur doctor
table, instead of two cols as one foreign key
-MANDAR
-----Original Message-----
Sent: Friday, March 23, 2001 7:31 PM
To: Multiple recipients of list ORACLE-L
I'm still not quite sure I understand the "single code table" business. Let
me give an example (taken from a live example at one of my previous jobs).
I have a table called DOCTOR that has two fields - SPECIALTY and TYPE.
The acceptable values for SPECIALTY are N, FP, OBG, etc...
The acceptable values for TYPE are MD, FP, OPH, etc...
If I have a "single code table", how can I create a Foreign key constraint
on the SPECIALTY column and another one on the TYPE column?
------
Jacques R. Kilchoer
(949) 754-8816
Quest Software, Inc.
8001 Irvine Center Drive
Irvine, California 92618
U.S.A.
http://www.quest.com
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Mandar Ghosalkar
INET: [EMAIL PROTECTED]
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
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