Q
Problem solve Get help with specific problems with your technologies, process and projects.

Composite key in PL/SQL

What is composite key in PL/SQL?
Composite key means nothing in PL/SQL. However in SQL, a composite key is a combination of more than one column to identify a unique row in a table.

For example, A customer table with Customer_ID, First Name, Last Name, Date of Birth may have a unique key in the customer ID, but a composite key may be LAST NAME, FIRST NAME and Date of Birth (Although, theoretically, there can be two John Smiths born on the 4th of July, 1776).

Dig Deeper on Using Oracle PL-SQL

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

SearchDataManagement

SearchBusinessAnalytics

SearchSAP

SearchSQLServer

TheServerSide.com

SearchDataCenter

SearchContentManagement

SearchHRSoftware

Close