Discussion
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- Question
If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value.
Options- A. the primary key
- B. any alternate key
- C. a surrogate key
- D. a foreign key
- Correct Answer
- the primary key
- 1. Which is not true about surrogate keys?
Options- A. They are short.
- B. They are fixed.
- C. They have meaning to the user.
- D. They are numeric. Discuss
- 2. Which of the following columns is(are) are required in a table?
Options- A. A foreign key
- B. An alternate key
- C. A primary key
- D. A surrogate key. Discuss
- 3. Which of the following column properties would be used to specify that cells in a column must contain a monetary value that is less than another monetary value in the same row?
Options- A. Null status
- B. Data type
- C. Default value
- D. Data constraints Discuss
- 4. Which of the following column properties specifies whether or not cells in a column must contain a data value?
Options- A. Null status
- B. Data type
- C. Default value
- D. Data constraints Discuss
- 5. For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?
Options- A. Two
- B. Three
- C. Four
- D. Six Discuss
- 6. Which of the following column properties would be used to specify that cells in a column must contain a monetary value?
Options- A. Null status
- B. Data type
- C. Default value
- D. Data constraints Discuss
- 7. Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?
Options- A. A domain constraint
- B. A range constraint
- C. An intrarelation constraint
- D. An interrelation constraint Discuss
- 8. Which of the following column properties would be used to specify that cells in a column must be immediately filled with a monetary value of $10,000?
Options- A. Null status
- B. Data type
- C. Default value
- D. Data constraints Discuss
- 9. The identifier of an entity will become the ________ of the new table.
Options- A. foreign key
- B. main attribute
- C. primary key
- D. identity key Discuss
- 10. Each entity is represented as a(n):
Options- A. tuple.
- B. table.
- C. attribute.
- D. file. Discuss
Data Models into Database Designs problems
Search Results
Correct Answer: They have meaning to the user.
Correct Answer: A primary key
Correct Answer: Data constraints
Correct Answer: Null status
Correct Answer: Six
Correct Answer: Data type
Correct Answer: An intrarelation constraint
Correct Answer: Default value
Correct Answer: primary key
Correct Answer: table.
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