Author Question: A composite identifier is defined as a composite attribute that is an identifier. Indicate ... (Read 142 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
A composite identifier is defined as a composite attribute that is an identifier.
 
  Indicate whether the statement is true or false

Question 2

A surrogate key is an artificial column that is added to a relation to be its primary key.
 
  Indicate whether the statement is true or false



fwbard

  • Sr. Member
  • ****
  • Posts: 325
Answer to Question 1

FALSE

Answer to Question 2

TRUE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

fwbard

  • Sr. Member
  • ****
  • Posts: 325

 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

The human body produces and destroys 15 million blood cells every second.

For a complete list of videos, visit our video library