| 1 |
The operator that needs one operand is called |
- A. unary
- B. binary
- C. ternary
- D. all
|
| 2 |
The columns of a table correspond to |
- A. table
- B. record
- C. field
- D. cell
|
| 3 |
The rows of a relations can be of ___________ order. |
- A. Any
- B. Same
- C. Sorted
- D. Constant
|
| 4 |
Which of the following are properties of relations? |
- A. Each attribute has a unique name
- B. No two rows in a relation are identical
- C. There are no multivalued attributes in a relation
- D. All of the above
|
| 5 |
Which is related to modality? |
- A. Optional
- B. Mandatory
- C. Unidirectional
- D. Both A & B
|
| 6 |
The number of characters in fixed-length field is: |
- A. Constant
- B. Variable
- C. 10
- D. 100
|
| 7 |
The data or information that describes an entity is called: |
- A. Attribute
- B. Data item
- C. Record
- D. Tuple
|
| 8 |
A person, place, thing or event about which data is kept in the database is called: |
- A. Attribute
- B. Field
- C. Record
- D. Entity
|
| 9 |
Views are also called: |
- A. Complex tables
- B. Simple tables
- C. Virtual tables
- D. Actual tables
|
| 10 |
An attribute is also known as a: |
- A. Table
- B. Row
- C. Relation
- D. Field
|