| 1 |
An entity related to itself in an ERD model refers to : |
- A. Recursive relationship
- B. One-to-many relationship
- C. Many-to-many relationship
- D. One-to-one relationship
|
| 2 |
-------------------- defines the nature of the relationship |
- A. cardinality
- B. entities
- C. modality
- D. none of these
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| 3 |
Which of the following is used to describe the characteristics of an object? |
- A. Attribute
- B. Relationship
- C. Cardinality
- D. Modality
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| 4 |
Which key does not have uniqueness property? |
- A. Candidate
- B. Foreign key
- C. Primary key
- D. Secondary key
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| 5 |
Format specifier starts with the symbol |
|
| 6 |
Every relation must have: |
- A. Primary key
- B. Candidate key
- C. Secondary key
- D. All of these
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| 7 |
Optional is represented by |
- A. 0
- B. 1
- C. 2
- D. none of these
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| 8 |
An entity related to itself in an ERD model refers to |
- A. recursive relationship
- B. one-to-many relationship
- C. many to many relationship
- D. on to one relationship
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| 9 |
Which of the following is basic data distribution strategy? |
- A. Centralized
- B. Partitioned
- C. Replication
- D. All
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| 10 |
|
- A. mendatory
- B. optional
- C. may be many
- D. none of theses
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