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DBMS Databases & Types Multiple-Choice Questions (MCQs) and Answers | Set 3
DBMS Databases & Types MCQs (Set 3): This section contains DBMS Databases & Types Multiple-Choice Questions (MCQs) and Answers.
Submitted by Anushree Goswami, on December 06, 2021
1. Which among the following is a type of database?
- Centralized
- Distributed
- Cloud
- All of the above
Answer: D) All of the above
Explanation:
Centralized, Distributed and Cloud are all types of databases.
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2. What is Centralized Database?
- These databases store information in a central location.
- These databases store information in a decentral location.
- These databases store information in a left location.
- These databases store information in a right location.
Answer: A) These databases store information in a central location
Explanation:
These databases store information in a central location.
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3. What is the advantage of Centralized Database?
- As a result of the large size of the centralized database, fetching the data takes a long time.
- Because data is managed in a central repository, consistency is maintained.
- An extensive database system is difficult to update.
- A server failure could result in the loss of all data, which is a huge loss.
Answer: B) Because data is managed in a central repository, consistency is maintained
Explanation:
Because data is managed in a central repository, consistency is maintained.
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4. What is the disadvantage of Centralized Database?
- As a result of the large size of the centralized database, fetching the data takes a long time.
- An extensive database system is difficult to update.
- A server failure could result in the loss of all data, which is a huge loss.
- All of the above
Answer: D) All of the above
Explanation:
The disadvantages of Centralized Database are –
- As a result of the large size of the centralized database, fetching the data takes a long time.
- An extensive database system is difficult to update.
- A server failure could result in the loss of all data, which is a huge loss.
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5. What is an example of Distributed Database?
- HBase
- Ignite
- Apache
- All of the above
Answer: D) All of the above
Explanation:
HBase, Ignite, Apache are all examples of Distributed Database.
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6. What is a Homogeneous DDB?
- Database systems running on these platforms are running on the same operating system, using the same application protocol, and using similar hardware.
- Database systems on these platforms operate on different operating systems and use different application protocols, as well as different hardware.
- Database systems running on these platforms are running on the different operating system, using the same application protocol, and using similar hardware.
- Database systems on these platforms operate on same operating systems and use different application protocols, as well as different hardware.
Answer: A) Database systems running on these platforms are running on the same operating system, using the same application protocol, and using similar hardware
Explanation:
Database systems running on these platforms are running on the same operating system, using the same application protocol, and using similar hardware.
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7. Database systems on ____ operate on different operating systems and use different application protocols, as well as different hardware.
- Homogeneous DDB
- Heterogeneous DDB
- DDB
- None of the above
Answer: B) Heterogeneous DDB
Explanation:
Database systems on heterogeneous DDB operate on different operating systems and use different application protocols, as well as different hardware.
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8. What is the advantage of Distributed Database?
- The distributed database can be developed in a modular way, that is, new computers can be added to the system, and they can be connected to the system.
- There will be no impact on the data set if one server fails.
- Both A. and B.
- None of the above
Answer: C) Both A. and B.
Explanation:
The advantages of Distributed Database are –
- The distributed database can be developed in a modular way, that is, new computers can be added to the system, and they can be connected to the system.
- There will be no impact on the data set if one server fails.
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9. What is TRUE about Relational Database?
- Relational databases store information in rows (tuples) and columns (attributes), which create tables (relations).
- Data is stored, manipulated, and maintained using SQL in a relational database
- Tables in the database contain unique keys that identify them from other tables.
- All of the above
Answer: D) All of the above
Explanation:
The following statements are TRUE about Relational Database –
- Relational databases store information in rows (tuples) and columns (attributes), which create tables (relations).
- Data is stored, manipulated, and maintained using SQL in a relational database
- Tables in the database contain unique keys that identify them from other tables.
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10. What is the short form of properties in Relational Database?
- ADEC
- ADID
- ACIE
- ACID
Answer: D) ACID
Explanation:
There are four properties in Relational Database known as ACID in short, i.e., Atomicity, Consistency, Isolation and Durability.
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