Data Models into Database Designs Questions and Answers
Data Models into Database Designs
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20 questions
1. Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?
- A domain constraint
- A range constraint
- An intrarelation constraint
- An interrelation constraint
2. In a 1:N relationship, the foreign key is placed in:
- either table without specifying parent and child tables.
- the parent table.
- the child table.
- either the parent table or the child table.
3. Which of the following column properties specifies whether or not cells in a column must contain a data value?
- Null status
- Data type
- Default value
- Data constraints
4. A primary key should be defined as:
- NULL.
- NOT NULL.
- Either of the above can be used.
- None of the above are correct.
5. Which of the following column properties would be used to specify that cells in a column
must contain a monetary value?
- Null status
- Data type
- Default value
- Data constraints
6. Which of the following situation requires the use of ID-dependent entities?
- Association relationships only
- Multivalued attributes only
- Archetype/instance relationships only
- All of the above use ID dependent entities
7. A foreign key is:
- a column containing the primary key of another table.
- used to define data types.
- used to define null status.
- all of the above are above correct.
8. Which of the following columns is(are) are required in a table?
- A foreign key
- An alternate key
- A primary key
- A surrogate key.
9. In a 1:1 relationship, the foreign key is placed in:
- either table without specifying parent and child tables.
- the parent table.
- the child table.
- either the parent table or the child table.
10. 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?
- Null status
- Data type
- Default value
- Data constraints