This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The binary constraint MUST NOT indicates that ________. A) a specific binary relationship must ... (Read 236 times)

HCHenry

  • Hero Member
  • *****
  • Posts: 591
on: Jul 7, 2018
The binary constraint MUST NOT indicates that ________.
 
  A) a specific binary relationship must not be included in a ternary relationship
  B) a table includes values that must not occur in a binary relationship
  C) a table includes values that must not occur in a ternary relationship
  D) a binary relationship includes value combinations that must not occur in a ternary relationship

Question 2

Suppose you have created a data model for an airline based on a variety of forms, reports, user interviews, data sources, etc.
 
  Your client comes forward with a new desired report that includes passenger weights and a relationship between passengers and employees, neither of which is in your E-R diagram. You should ________.A) create a new, separate E-R diagram with just the new information
  B) add the relationship and the weight attribute to the existing data model
  C) add the relationship but not the weight attribute
  D) add the weight attribute but not the relationship


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Dunkey

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 7, 2018
Answer to Question 1

D

Answer to Question 2

B


HCHenry

  • Member
  • Posts: 591
Reply 2 on: Jul 7, 2018
Wow, this really help

ghepp

  • Member
  • Posts: 361
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

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

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Cells involved in specific immunity in vertebrates. Cells involved in specific immunity in vertebrates.
Heritability (h2) of Addiction to Specific Addictive Agents Heritability (h2) of Addiction to Specific Addictive Agents
Age-Crime Relationship in (a) 1842 and (b) 1992 Age-Crime Relationship in (a) 1842 and (b) 1992
When teenagers live in single-parent homes, a good relationship with grandparents is related to ... When teenagers live in single-parent homes, a good relationship with grandparents is related to ...
Responses Produced by Activation of Specific Opioid Receptors Responses Produced by Activation of Specific Opioid Receptors
Specific amino acid–nucleotide contacts for cI and Cro repressors Specific amino acid–nucleotide contacts for cI and Cro repressors
Video: Structures that affect circulation - arterioles and vasomotor responses and venous return

For a complete list of videos, visit our video library