What is the difference between distributed database and centralized database?
Similarly, you may ask, what is centralized and distributed database?
Centralized databases store data on a single CPU bound to a single certain physical/geographical location. Distributed databases, however, rely on a central DBMS which manages all its different storage devices remotely, as it is not necessary for them to be kept in the same physical and/or geographical location.
One may also ask, why do we need centralized database? Data is easily portable because it is stored at the same place. The centralized database is cheaper than other types of databases as it requires less power and maintenance. All the information in the centralized database can be easily accessed from the same location and at the same time.
People also ask, what are the advantages of distributed database over centralized database?
Distributed databases eliminate disadvantages of centralized databases and offer several advantages such as availability, reliability, performance, modular development etc. But in distributed environments we face new problems that are not relevant in centralized environments, such as fragmentation and data replication.
What is the major difference between centralized and decentralized control and access?
As its name implies, decentralized systems don't have one central owner. Instead, they use multiple central owners, each of which usually stores a copy of the resources users can access. A decentralized system can be just as vulnerable to crashes as a centralized one. However, it is by design more tolerant to faults.