This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Briefly describe the various tasks of the primary key. What will be an ideal ... (Read 15 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
on: Jul 7, 2018
Briefly describe the various tasks of the primary key.
 
  What will be an ideal response?

Question 2

Databases are created in a DBMS during the implementation step.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frankwu0507

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 7, 2018
Answer to Question 1

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.

Answer to Question 2

TRUE


jazziefee

  • Member
  • Posts: 505
Reply 2 on: Jul 7, 2018
Wow, this really help

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

The logistic growth model does not describe all populations. The logistic growth model does not describe all populations.
The pattern of primary succession at Glacier Bay, Alaska. The pattern of primary succession at Glacier Bay, Alaska.
Primary production increases with an increase in total phosphorus concentration. Primary production increases with an increase in total phosphorus concentration.
Benign Primary Bone Tumors Benign Primary Bone Tumors
Graphs of Primary Trigonometric Ratios Graphs of Primary Trigonometric Ratios
Remote satellite monitoring of gross primary productivity across the United States. The differences Remote satellite monitoring of gross primary productivity across the United States. The differences
Video: Introduction to Insulin

For a complete list of videos, visit our video library