Ask a Question
  
  
  
Top Posters
Since Sunday
22
15
7
7
6
6
6
5
5
5
5
5
New Topic  
wrote...
Posts: 34
A week ago
Briefly describe the various tasks of the primary key.
Source  Download Study Guide
Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
Authors:
Read 2 times
1 Reply
Related Topics
Replies
wrote...
A week ago
The primary key is used for four primary tasks. First, it is used to uniquely identify the rows in a table. Second, it is used to represent rows in relationships. Third, most DBMS products use the values of the primary key to organize the storage of the relation. Finally, primary keys are used in indexes and other structures to improve performance for search operations.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
  159 People Browsing
 123 Signed Up Today
Related Images
 946
 169
 131
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 61