Solved

How to create table with combo primary key which are also two foreign keys

Posted on 2008-10-29
2
169 Views
Last Modified: 2012-06-27
I'm creating a bridge table to change a many to many relationship to two many to one relationships.
I'm new to transact-sql.  The create table statement below references two columns for the primary key, au_id and title_id.  These are also both primary keys in two other tables, called authors and titles.  I'm not sure I have the syntax correct below.  Any suggestions, oberservations are appreciated.

create table titleauthor (
au_id VARCHAR (7) NOT NULL,
title_id VARCHAR (7) NOT NULL,
royalty FLOAT,
notes TEXT,
PRIMARY KEY (au_id,title_id),
FOREIGN KEY (au_id,title_id) REFERENCES authors,titles);
0
Comment
Question by:chuckmullins
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 37

Accepted Solution

by:
momi_sabag earned 125 total points
ID: 22829041
try
create table titleauthor (
au_id VARCHAR (7) NOT NULL,
title_id VARCHAR (7) NOT NULL,
royalty FLOAT,
notes TEXT,
PRIMARY KEY (au_id,title_id),
FOREIGN KEY (au_id) REFERENCES authors,
FOREIGN KEY (title_id) REFERENCES titles);
0
 

Author Closing Comment

by:chuckmullins
ID: 31511068
Perfect!  Thanks so much!
0

Featured Post

Guide to Performance: Optimization & Monitoring

Nowadays, monitoring is a mixture of tools, systems, and codes—making it a very complex process. And with this complexity, comes variables for failure. Get DZone’s new Guide to Performance to learn how to proactively find these variables and solve them before a disruption occurs.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Find unused columns in a table 12 96
SQL Select Query help 1 50
Better way to filter date  - Query 5 45
Query Task 8 21
INTRODUCTION: While tying your database objects into builds and your enterprise source control system takes a third-party product (like Visual Studio Database Edition or Red-Gate's SQL Source Control), you can achieve some protection using a sing…
In SQL Server, when rows are selected from a table, does it retrieve data in the order in which it is inserted?  Many believe this is the case. Let us try to examine for ourselves with an example. To get started, use the following script, wh…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question