Post by account_disabled on Oct 22, 2023 6:39:05 GMT
Distributed Database September 3, 2018 Popular Articles A distributed database (DDB) is a collection of multiple logically related databases distributed over a computer network. A distributed database management system (distributed DBMS) is a software system that allows the management of distributed databases and makes the distribution transparent to users [1]. The term distributed database system (DDBS) usually refers to a combination of DDB and distributed DBMS.
Decentralized DBMS are similar to Mobile Number List file systems (see Distributed File Systems) in that both facilitate access to distributed data. However, they have important structural and functional differences that characterize distributed database systems: Distributed file systems only allow users to access files located on computers other than their own. These files have no explicit structure (i.e., they are flat), and the relationships (if any) between data in different files are not managed by the system but are the responsibility of the user. DDBs, on the other hand, are organized according to schemas that define the structure of distributed data and the relationships between data.
A distributed DBMS system has the full functionality of a DBMS., transaction management (concurrency control and recovery), and integrity enforcement. In this respect, a distributed DBMS also differs from a transaction processing system in that the latter only provides some of these capabilities. A distributed DBMS provides transparent access to data, whereas in a distributed file system the user must know (to some extent) the location of the data. In addition to being distributed across multiple sites, a DDB can be partitioned (called sharded) and replicated. All of this is invisible to the user. In this sense, distributed database technology extends the concept of data independence—a core concept in database management—to environments where data is distributed and replicated across many machines connected by a network.
Decentralized DBMS are similar to Mobile Number List file systems (see Distributed File Systems) in that both facilitate access to distributed data. However, they have important structural and functional differences that characterize distributed database systems: Distributed file systems only allow users to access files located on computers other than their own. These files have no explicit structure (i.e., they are flat), and the relationships (if any) between data in different files are not managed by the system but are the responsibility of the user. DDBs, on the other hand, are organized according to schemas that define the structure of distributed data and the relationships between data.
A distributed DBMS system has the full functionality of a DBMS., transaction management (concurrency control and recovery), and integrity enforcement. In this respect, a distributed DBMS also differs from a transaction processing system in that the latter only provides some of these capabilities. A distributed DBMS provides transparent access to data, whereas in a distributed file system the user must know (to some extent) the location of the data. In addition to being distributed across multiple sites, a DDB can be partitioned (called sharded) and replicated. All of this is invisible to the user. In this sense, distributed database technology extends the concept of data independence—a core concept in database management—to environments where data is distributed and replicated across many machines connected by a network.