« previous next »

Author Question: How is maximum cardinality expressed in crow's foot E-R diagrams? What will be an ideal ... (Read 27 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jul 7, 2018
How is maximum cardinality expressed in crow's foot E-R diagrams?
 
  What will be an ideal response?

Question 2

In a common form of RFM analysis, customers with an R score of 5 are in the 20 of customers who have the most recent orders.
 
  Indicate whether the statement is true or false


diana chang

  • Sr. Member
  • ****
  • Posts: 288
Reply #1 on: Jul 7, 2018
Answer to Question 1

The crow's foot E-R diagram notation uses a hash mark to indicate a maximum cardinality of one and a crow's foot to indicate a maximum cardinality of many. Each symbol is placed immediately next to the rectangle symbolizing an entity. These symbols are combined in various forms to signify 1:1, 1:N and N:M relationships.

Answer to Question 2

FALSE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Right foot from the plantar aspect Right foot from the plantar aspect
Thermodynamic Diagrams and Vertical Temperature Profiles Thermodynamic Diagrams and Vertical Temperature Profiles
Figure-8s on the toes mobilize joints of the foot. Figure-8s on the toes mobilize joints of the foot.
Slide fist over foot bottom. Slide fist over foot bottom.
Sliding effleurage with a thumb between metatarsals on the dorsal foot surface. Slide from web to ... Sliding effleurage with a thumb between metatarsals on the dorsal foot surface. Slide from web to ...
Calculus help: Find a cubic function f (x) = ax3 +bx2 +cx+d that has a local maximum value of 3 ... Calculus help: Find a cubic function f (x) = ax3 +bx2 +cx+d that has a local maximum value of 3 ...
Video: Net filtration pressure and lymph formation, edema & blood velocity

For a complete list of videos, visit our video library