Database Systems problems
- 1. A database management system
Options- A. allows simultaneous access to multiple files
- B. can do more than a record management system
- C. is a collection of programs for managing data in a single file
- D. both (a) and (b)
- E. None of the above Discuss
Correct Answer: both (a) and (b)
- 2. Which command is used to remove a table from the database in SQL?
Options- A. DELETE TABLE
- B. DROP TABLE
- C. ERASE TABLE
- D. UNATTACH TABLE
- E. None of the above Discuss
Correct Answer: DROP TABLE
- 3. Periodically adding, changing and deleting file records is called file
Options- A. Updating
- B. upgrading
- C. restructuring
- D. renewing
- E. None of the above Discuss
Correct Answer: Updating
- 4. A file produced by a spreadsheet
Options- A. is generally stored on disk in an ASCII text format
- B. can be used as it by the DBMS
- C. can be used for graphic
- D. All of the above
- E. None of the above Discuss
Correct Answer: is generally stored on disk in an ASCII text format
- 5. The data dictionary tells the DBMS
Options- A. what files are in the database
- B. what attribute are possessed by the data
- C. what these files contain
- D. All of the above
- E. None of the above Discuss
Correct Answer: All of the above
- 6. Updating a database means
Options- A. revising the file structure
- B. reorganizing the database
- C. modifying or adding record occurrences
- D. All of the above
- E. None of the above Discuss
Correct Answer: modifying or adding record occurrences
- 7. What is the language used by most of the DBMSs for helping their users to access data?
Options- A. High level language
- B. Query language
- C. SQL
- D. 4GL
- E. None of the above Discuss
Correct Answer: Query language
- 8. Which of the following hardware components is the most important to the operation of a database management system?
Options- A. high-resolution video display
- B. printer
- C. high speed, large-capacity disk
- D. plotter
- E. mouse Discuss
Correct Answer: high speed, large-capacity disk
- 9. Large collections of files are called
Options- A. fields
- B. records
- C. databases
- D. file system
- E. None of the above Discuss
Correct Answer: databases
- 10. A _____ means that one record in a particular record type is related to only one record of another record type.
Options- A. One-to-one relationship
- B. One-to-many relationship
- C. Many-to-one relationship
- D. Many-to-many relationship
- E. None of the above Discuss
Correct Answer: One-to-one relationship
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