Distributed Database Questions and Answers
Distributed Database systems play an important role in modern data storage and processing, especially where data needs to be shared across multiple interconnected locations. In this topic, we provide Distributed Database Questions with Answers designed to help students prepare for competitive exams and technical placement interviews. Since many tech companies test candidates on database concepts, these aptitude-based database questions include short explanations to make learning easier. These practice questions follow exam patterns seen in Wipro, Infosys, TCS, Cognizant, and engineering entrance assessments. Learning Distributed Database concepts improves understanding of data replication, transparency, fragmentation, and fault tolerance—key areas in database engineering. These aptitude questions with solutions PDF style explanations will help you revise essential concepts quickly and confidently. This section is suitable for both beginners and advanced learners looking for structured preparation for exams and interviews.
Distributed Database
11. A distributed database is which of the following?
- A single logical database that is spread to multiple locations and is interconnected by a network
- A loose collection of file that is spread to multiple locations and is interconnected by a network
- A single logical database that is limited to one location.
- A loose collection of file that is limited to one location.
12. A semijoin is which of the following?
- Only the joining attributes are sent from one site to another and then all of the rows are returned.
- All of the attributes are sent from one site to another and then only the required rows are returned.
- Only the joining attributes are sent from one site to another and then only the required rows are returned.
- All of the attributes are sent from one site to another and then only the required rows are returned.
13. Which of the following is a disadvantage of replication?
- Reduced network traffic
- If the database fails at one site, a copy can be located at another site.
- Each site must have the same storage capacity.
- Each transaction may proceed without coordination across the network.
14. A distributed database can use which of the following strategies?
- Totally centralized at one location and accessed by many sites
- Partially or totally replicated across sites
- Partitioned into segments at different sites
- All of the above
15. Which of the following is not one of the stages in the evolution of distributed DBMS?
- Unit of work
- Remote unit of work
- Distributed unit of Work
- Distributed request