Author Question: An attribute that must have a value for every entity (or relationship) instance is a(n): A) ... (Read 139 times)

Kthamas

  • Hero Member
  • *****
  • Posts: 546
An attribute that must have a value for every entity (or relationship) instance is a(n):
 
  A) composite attribute.
  B) required attribute.
  C) optional attribute.
  D) multivalued attribute.

Question 2

Languages, menus, and other facilities by which users interact with the database are collectively called a(n):
 
  A) client.
  B) user interface.
  C) icon.
  D) development environment.


hanadaa

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

B

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

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

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

For a complete list of videos, visit our video library