Discussion
Home ‣ Computer Science ‣ Database Systems Comments
- Question
In a large DBMS
Options- A. each user can "see" only a small part of the entire database
- B. each user can access every sub¬schema
- C. each subschema contains every field in the logical schema
- D. All of the above
- E. None of the above
- Correct Answer
- each user can "see" only a small part of the entire database
- 1. An indexing operation
Options- A. sorts a file using a single key
- B. sorts file using two keys
- C. establishes an index for a file
- D. both (b) and (c)
- E. None of the above Discuss
- 2. In SQL, which command is used to add a column/integrity constraint to a table
Options- A. ADD COLUMN
- B. INSERT COLUMN
- C. MODIFY TABLE
- D. ALTER TABLE
- E. None of the above Discuss
- 3. A _____ means that one record in a particular record type may be related to more than 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
- 4. A ____ Contains the smallest unit of meaningful data, so you might call it the basic building block for a data file.
Options- A. File structure
- B. Records
- C. Fields
- D. Database
- E. None of the above Discuss
- 5. Characteristic(s) of a distributed MIS structure is
Options- A. interactive sharing of the workload
- B. a multiprocessing environment
- C. computers supporting local DP operations
- D. All of the above
- E. None of the above Discuss
- 6. The designer of a form includes
Options- A. filed designators
- B. prompts
- C. data
- D. both (a) and (b)
- E. None of the above Discuss
- 7. An audit trail
Options- A. is used to make back-up copies
- B. is the recorded history of operations performed on a file
- C. can be used to restore lost information
- D. All of the above
- E. None of the above Discuss
- 8. The way a particular application views the data from the data base that the application uses is a :
Options- A. module
- B. relational model
- C. schema
- D. subschema
- E. None of the above Discuss
- 9. The model for a _____ resembles the hierarchical model in many respects.
Options- A. Network database
- B. Relational database
- C. Distributed database
- D. Hierarchical database
- E. None of the above Discuss
- 10. In SQL, the CREATE VIEW command is used
Options- A. to recompile view
- B. to define a view of one or more tables or views
- C. to recompile a table
- D. to create a trigger
- E. None of the above Discuss
Database Systems problems
Search Results
Correct Answer: establishes an index for a file
Correct Answer: ALTER TABLE
Correct Answer: One-to-many relationship
Correct Answer: Fields
Correct Answer: All of the above
Correct Answer: both (a) and (b)
Correct Answer: is the recorded history of operations performed on a file
Correct Answer: subschema
Correct Answer: Network database
Correct Answer: to define a view of one or more tables or views
Comments
There are no comments.More in Computer Science:
Programming
Copyright ©CuriousTab. All rights reserved.