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9.0

Multiple foreign keys in one table referencing the same column in a second table

Asked by sedberg1 in SQL Query Syntax, Oracle 10.x, Oracle CRM

Tags: Oracle 10g

Honestly, this is a school project I can't figure out a small part. I'm using Oracle 10g Personal Edition and always use SQLPLUS. There are two tables, PROCEDURES and TRANSACTIONS.

The columns are:
PROCEDURES:
PROCEDURE# (primary key)
DESCRIPTION (varchar2)
AMOUNT (number)

TRANSACTIONS:
CASE# (primary key)
PATIENT#
TRANSDATE
PROCEDURE#1 (foreign key to PROCEDURE# in PROCEDURES)
PROCEDURE#2 (foreign key to PROCEDURE# in PROCEDURES)
PROCEDURE#3 (foreign key to PROCEDURE# in PROCEDURES)
AMOUNT#1 (AMOUNT from PROCEDURE#1)
AMOUNT#2 (AMOUNT from PROCEDURE#2)
AMOUNT#3 (AMOUNT from PROCEDURE#3)
TOTAL (SUM of AMOUNT#1 - AMOUNT#3)

So I have everything done and created and all my constraints. What I'm trying to do is get AMOUNT#1, AMOUNT#2, and AMOUNT#3 to automatically populate with the appropriate amount from the PROCEDURES table. Is this possible? I'm only about beginner-intermediate with my knowledge of SQL. Can I include this in the CREATE TABLE statement for TRANSACTIONS?

Get your answer NOW

         
           
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             CREATE TABLE PROCEDURES
	(PROCEDURE# CHAR(4) PRIMARY KEY,
	DESCRIPTION VARCHAR2(50),
	AMOUNT NUMBER(10))
 
CREATE TABLE TRANSACTIONS
	(CASE# NUMBER(5) PRIMARY KEY,
	PATIENT# NUMBER(5),
	TRANSDATE DATE DEFAULT SYSDATE NOT NULL,
	PROCEDURE#1 CHAR(6),
	PROCEDURE#2 CHAR(6),
	PROCEDURE#3 CHAR(6),
	AMOUNT#1 NUMBER(10),
                     AMOUNT#2 NUMBER(10),
                      AMOUNT#3 NUMBER(10),
	TOTAL NUMBER(10),
	CONSTRAINT TRANSACTIONS_PATIENT#_FK FOREIGN KEY (PATIENT#) REFERENCES PATIENTS(PATIENT#),
	CONSTRAINT TRANSACTIONS_PROCEDURES#1_FK FOREIGN KEY (PROCEDURE#1) REFERENCES PROCEDURES(PROCEDURE#),
	CONSTRAINT TRANSACTIONS_PROCEDURES#2_FK FOREIGN KEY (PROCEDURE#2) REFERENCES PROCEDURES(PROCEDURE#),
	CONSTRAINT TRANSACTIONS_PROCEDURES#3_FK FOREIGN KEY (PROCEDURE#3) REFERENCES PROCEDURES(PROCEDURE#));

           
         

20091111-EE-VQP-89 - Hierarchy / EE_QW_3_20080625

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Multiple foreign keys in one table referencing the same column in a second table

Asked by sedberg1 in SQL Query Syntax, Oracle 10.x, Oracle CRM

Tags: Oracle 10g

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