Dbms quiz
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This document contains 25 multiple choice questions about database management systems (DBMS). The questions cover topics such as database architecture, data modeling, transactions, security, and normalization. Example questions ask about the components of a database environment, the purpose of rollback in a database, and which normal form is considered adequate for relational database design.
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11. When running a ‘PROJECT’ join, what is returned from the table:
A. COLUMN
B. ROW
C. Single Attribute
D. a list of tables in the database
12. What are the 3 types of relationships commonly shown on an entity relationship diagram?
A. 1 to 1
B. 1 to Many
C. Many to Many
D. All the above
E. None of the above
13. What is an entity relationship diagram (ERD)?
A. graphical representation of all entities in a database and how the entities are related
b. list of the log files in the database.
C. list of all the tablespace names in a database
D. A diagram that shows how data is written to a physical disk drive.
14. The definition of an attribute in a table that has no value is:
A. ZERO
b. NULL
c. ZILTCH
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a. Concurrency Control
b. Business intelligence
c. Transaction management
d. query optimization
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B. simple representation of complex real-world data structures
C. name of system for designing software
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A. LIKE
B. ORDERED BY
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D. DIFFERENT
4. What does the column represent in a table?
a. Attribute of the table records
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c. The system log from the database
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C. single attribute
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c. ZILTCH
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a. Concurrency Control
b. Business intelligence
c. Transaction management
d. query optimization
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- 3. Q2. A network schema 3 (A) stores data in tables (B) restricts the structure to a one-to-many relationship (C) permits many-to-many relationships (D) none of these
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- 5. Q4. An entry in the telephone book can be compared to a 5 (A) Field (B) Record (C) File (D) Database
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- 12. Q11. The relational database management (RDBM) system manages data in more than one file at once. How does it organize these files? 12 (A) Relations (B) Tables (C) Tuples (D) Both (a) and (b)
- 13. Q12. The database environment has all the following components except 13 (A) Database administrator (B) Database (C) Users (D) Separate files
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- 15. Q14. The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in a/an 15 (A) Sequential file (B) Hashed file (C) Indexed file (D) B-tree file
- 16. Q15. _____ provides total solutions to reduce data redundancy, inconsistency, dependence and unauthorized access of data. 16 (A) Tables (B) DBMS (C) Production passwords (D) Database
- 17. Q16. Periodically adding, changing and deleting file records is called file 17 (A) Renewing (B) Updating (C) Upgrading (D) Restructuring
- 18. Q17. Attributes can be defined for 18 (A) Pages (B) Macro (C) Switch board (D) Entity
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- 20. Q19. The ability to find an individual item in a file immediately 20 (A) Sequential access (B) File allocation table (C) Directory (D) Direct access
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- 22. Q21. Which normal form is considered adequate for normal relational database design? 22 (A) 2 NF (B) 3 NF (C) 4 NF (D) 5 NF
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