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ER Model and Business Rules
See What Others Are Saying!
Question
An action assertion must include which of the following?
Options
A. Anchor object
B. Action
C. Corresponding object
D. All of the above.
Correct Answer
All of the above.
More questions
1. A UML diagram includes which of the following?
Options
A. Class name
B. List of attributes
C. List of operations
D. All of the above.
Show Answer
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Discuss
Correct Answer: All of the above.
2. What is the overall responsibility of the DBA?
Options
A. Facilitate the development and use of the database
B. Create and populate tables
C. Development, operation, and maintenance of the database and its applications
D. Both the first and third answers above are correct.
Show Answer
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Correct Answer: Both the first and third answers above are correct.
3. The ODBC Level 1 API contains which of the following functions?
Options
A. Browse possible connections and data sources only
B. Connect to data sources with driver-specific information only
C. Process a scrollable cursor only
D. Both 1 and 3 above are in the OBDC Level 1 API.
Show Answer
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Discuss
Correct Answer: Connect to data sources with driver-specific information only
4. SERIALIZABLE is the strictest isolation level.
Options
A. True
B. False
Show Answer
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Correct Answer: True
5. A key:
Options
A. must always be composed of two or more columns.
B. can only be one column.
C. identifies a row.
D. identifies a column.
Show Answer
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Correct Answer: identifies a row.
6. Structured data may include which of the following?
Options
A. Photo image
B. Video clip
C. Dates
D. None of the above.
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Correct Answer: Dates
7. Which of the following is not a restriction for a table to be a relation?
Options
A. The cells of the table must contain a single value.
B. All of the entries in any column must be of the same kind.
C. The columns must be ordered.
D. No two rows in a table may be identical.
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Correct Answer: The columns must be ordered.
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
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Correct Answer: Default value
9. You can check on the status of tables with the DESCRIBE or DESC command.
Options
A. True
B. False
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Correct Answer: True
10. Which of the following applies to a class rather than an object?
Options
A. Query
B. Update
C. Scope
D. Constructor
Show Answer
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Discuss
Correct Answer: Scope
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