16 Questions
What are the advantages and disadvantages of DDBMS?
Advantages: Improved performance, increased availability, and enhanced reliability. Disadvantages: Complexity, security risks, and potential data inconsistency.
Explain the characteristics of DDBMS.
The characteristics include distribution transparency, fragmentation, replication, and data allocation.
Describe the components of DDBMS.
Components include local DBMS, global transaction manager, distributed transaction manager, and data communication.
Explain the concept of distribution transparency in DDBMS.
Distribution transparency refers to the ability of users and applications to access and manipulate data without being aware of its distribution across multiple locations.
What are the types of database fragmentation in DDBMS?
The types include horizontal, vertical, and mixed fragmentation.
Explain the concept of replication in DDBMS.
Replication involves creating and maintaining multiple copies of data at different locations to improve data availability and fault tolerance.
What is DDBMS and how does it treat the database?
DDBMS stands for distributed database management system. It treats the database as single logical data.
What are the limitations of a centralized database that led to the concept of DDBMS?
Performance degradation, high maintenance cost, reliability problems, and data availability issues.
What problem did corporations face in the 1970s that led to the implementation of centralized database management systems?
Structured information needs were not efficiently met.
What is the concept of location transparency in a distributed database?
The user issues a query without needing to know the location of the data being sought.
How does DDBMS cope with technological advancement?
DDBMS copes with technological advancement through the acceptance of the Internet as a business platform, the mobile wireless revolution, and the usage of applications.
What are the problems associated with a centralized database?
Performance degradation, high maintenance cost, reliability problems, data availability issues, and bottleneck at the site with the database.
What is the evolution of DDBMS and how did it address the needs of corporations in the 1970s?
During the 1970s, corporations implemented centralized database management systems to meet their structured information needs. However, the structured information needs were not efficiently met by centralized systems, leading to the evolution of DDBMS.
What is the main concept behind a distributed database?
The main concept is to spread the data out among various cities on the distributed network, each with its own computer and data storage facilities, while still considering all distributed data as a single logical database.
What is a distributed database (DDB) and what does a distributed database management system (DDBMS) do?
A distributed database (DDB) is a collection of multiple, logically interrelated databases distributed over a computer network. A distributed database management system (DDBMS) is the software that manages the DDB and provides an access mechanism that makes this distribution transparent to the users.
What are the factors that aided DDBMS to cope with technological advancement?
Acceptance of Internet as a platform for business, mobile wireless revolution, and usage of applications.
This quiz covers topics related to Evolution of Distributed Database Management Systems, Advantages and Disadvantages, Distributed Processing, Characteristics, Components, Data and Process Distribution, Transparency, and Database Design. It aims to test understanding and knowledge of the course material.
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