Discussion
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- Question
A good identifier is which of the following?
Options- A. One that can change over time
- B. Can be null
- C. One that is unique
- D. Be intelligent
- Correct Answer
- One that is unique
- 1. A ternary relationship involves how many entities?
Options- A. 3 or less
- B. 3
- C. More than 3
- D. 3 or more Discuss
- 2. A binary relationship cannot be which of the following?
Options- A. One-to-One
- B. One-to-Many
- C. Many-to-Many
- D. Zero-to-Zero Discuss
- 3. A database application can perform which of the following activities?
Options- A. Add records
- B. Read records
- C. Update records
- D. All of the above. Discuss
- 4. Metadata enables database designers and users to do all of the following except:
Options- A. sample data.
- B. understand what data exist.
- C. what the fine distinctions are between similar data items.
- D. what the data mean. Discuss
- 5. Which of the following types of databases are the most common?
Options- A. Personal
- B. Workgroup
- C. Department
- D. Enterprise Discuss
- 6. An entity name should be which of the following?
Options- A. A singular noun
- B. Specific to the organization
- C. Concise
- D. All of the above. Discuss
- 7. A good business rule is which of the following?
Options- A. Declarative
- B. Imprecise
- C. Redundant
- D. Compound Discuss
- 8. When the minimum and maximum number of instances of an entity is one, you know which of the following?
Options- A. Mandatory one
- B. Optional one
- C. Mandatory many
- D. Cannot tell Discuss
- 9. An oval represents which of the following in an ERD?
Options- A. Attribute
- B. Entity
- C. Optional One
- D. Relationship Discuss
- 10. A composite attribute is which of the following?
Options- A. An attribute that can be broken into components
- B. An attribute that cannot be broken into components
- C. Multiple attributes
- D. An identifier Discuss
Modeling Data in the Organization problems
Search Results
Correct Answer: 3
Correct Answer: Zero-to-Zero
Correct Answer: All of the above.
Correct Answer: sample data.
Correct Answer: Department
Correct Answer: All of the above.
Correct Answer: Declarative
Correct Answer: Mandatory one
Correct Answer: Attribute
Correct Answer: An attribute that can be broken into components
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