« previous next »

Author Question: In relational database design, ID-dependent entities are not used to ________. A) represent N:M ... (Read 170 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?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Polytomies represent uncertainty about phylogenetic relationships Polytomies represent uncertainty about phylogenetic relationships
Draw and label a diagram and explain how a factor-dependent transcription (rho-dependent) terminator Draw and label a diagram and explain how a factor-dependent transcription (rho-dependent) terminator
Systems Analysis and Design, 10th Edition Systems Analysis and Design, 10th Edition
Importance of Considering Gestalt Principles in Product Design (1 of 2) Importance of Considering Gestalt Principles in Product Design (1 of 2)
Modern house door design Modern house door design
A gene map for chromosome 12 from the NCBI database Map Viewer A gene map for chromosome 12 from the NCBI database Map Viewer
Video: Smoking Cessation

For a complete list of videos, visit our video library