Database Systems problems
- 1. A data dictionary doesn't provide information about:
Options- A. where data is located
- B. the size of the disk storage device
- C. It allows a many-to-many relationship
- D. It is conceptually simple
- E. It will be the dominant data base of the future Discuss
Correct Answer: the size of the disk storage device
- 2. In SQL, the _____ command is used to recompile a view
Options- A. COMPILE VIEW
- B. DEFINE VIEW
- C. CREATE VIEW
- D. ALTER VIEW
- E. None of the above Discuss
Correct Answer: ALTER VIEW
- 3. Which of the following is a type of DBMS software?
Options- A. database manipulation language
- B. query language
- C. utilities
- D. report writer
- E. All of the above Discuss
Correct Answer: database manipulation language
- 4. In SQL, the CREATE TABLE is used
Options- A. to create a table, defining its columns, integrity constrains, and storage allocation
- B. to add a column/integrity constraint to a table
- C. to redefine a column
- D. to change a table's storage characteristics
- E. All of the above Discuss
Correct Answer: to create a table, defining its columns, integrity constrains, and storage allocation
- 5. The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in
Options- A. a tree file
- B. an indexed file
- C. a hashed file
- D. a sequential file
- E. None of the above Discuss
Correct Answer: a hashed file
- 6. Which command is used to select distinct subject (SUB) from the table (BOOK)?
Options- A. SELECT ALL FROM BOOK
- B. SELECT DISTINCT SUB FROM BOOK
- C. SELECT SUB FROM BOOK
- D. All of the above
- E. None of the above Discuss
Correct Answer: SELECT DISTINCT SUB FROM BOOK
- 7. One approach to standardizing storing of data
Options- A. MIS
- B. structured programming
- C. CODASYL specifications
- D. All of the above
- E. None of the above Discuss
Correct Answer: CODASYL specifications
- 8. In SQL, which command is used to remove a stored function from the database?
Options- A. REMOVE FUNCTION
- B. DELETE FUNCTION
- C. DROP FUNCTION
- D. ERASE FUNCTION
- E. None of the above Discuss
Correct Answer: DROP FUNCTION
- 9. Versatile report generators can provide
Options- A. Columnar totals
- B. Subtotals
- C. Calculations
- D. All of the above
- E. None of the above Discuss
Correct Answer: All of the above
- 10. The modify operation is likely to be done after
Options- A. Delete
- B. Look-up
- C. Insert
- D. All of the above
- E. None of the above Discuss
Correct Answer: Look-up
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