Author Question: Which relation is created with the primary key associated with the relationship or associative ... (Read 92 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
Which relation is created with the primary key associated with the relationship or associative entity, plus any non-key attributes of the relationship or associative entity and the primary keys of the related entities (as foreign key attributes)?
 
  A) Associative entity
  B) Associative entity with its own key
  C) Associative entity with additional key
  D) Binary 1:N relationship

Question 2

The ________ rule specifies that an entity instance of the super type does not have to belong to any subtype.
 
  A) Total specialization
  B) Partial specialization
  C) Overlap
  D) Disjoint


Ahnyah

  • Sr. Member
  • ****
  • Posts: 336
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?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

For a complete list of videos, visit our video library