« previous next »

Author Question: In relational database design, ID-dependent entities are not used to ________. A) represent N:M ... (Read 186 times)

karlynnae

  • Hero Member
  • *****
  • Posts: 599
on: Jul 7, 2018
In relational database design, ID-dependent entities are not used to ________.
 
  A) represent N:M relationships
  B) handle associative relationships
  C) represent relationships where the child identifier does not include the key of the parent
  D) handle archetype/instance relationships

Question 2

To count the number of rows in a table, use the SQL construct COUNT(ROWS).
 
  Indicate whether the statement is true or false


nothere

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 7, 2018
Answer to Question 1

C

Answer to Question 2

FALSE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

The theoretical design of nature reserves, based on the tenets of island biogeography. The theoretical design of nature reserves, based on the tenets of island biogeography.
The age-dependent curve of salivary progresterone levels in three populations. The age-dependent curve of salivary progresterone levels in three populations.
Mechanism of the biotin-dependent pyruvate carboxylase reaction Phase II Mechanism of the biotin-dependent pyruvate carboxylase reaction Phase II
Structure of molybdenum-dependent nitrogenase from Azotobacter vinelandii Structure of molybdenum-dependent nitrogenase from Azotobacter vinelandii
Control of the cell cycle by cyclin-dependent kinases, and the checkpoints at which they operate Control of the cell cycle by cyclin-dependent kinases, and the checkpoints at which they operate
Figure of a Woman with a Drawing Showing Evidence of Original Painting and Outlining Design Scheme Figure of a Woman with a Drawing Showing Evidence of Original Painting and Outlining Design Scheme
Video: Green alga life cycle Animation

For a complete list of videos, visit our video library