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- Distributed_database abstract "A distributed database is a database in which storage devices are not all attached to a common processing unit such as the CPU, controlled by a distributed database management system (together sometimes called a distributed database system). It may be stored in multiple computers, located in the same physical location; or may be dispersed over a network of interconnected computers. Unlike parallel systems, in which the processors are tightly coupled and constitute a single database system, a distributed database system consists of loosely-coupled sites that share no physical components.System administrators can distribute collections of data (e.g. in a database) across multiple physical locations. A distributed database can reside on network servers on the Internet, on corporate intranets or extranets, or on other company networks. Because they store data across multiple computers, distributed databases can improve performance at end-user worksites by allowing transactions to be processed on many machines, instead of being limited to one.Two processes ensure that the distributed databases remain up-to-date and current: replication and duplication. Replication involves using specialized software that looks for changes in the distributive database. Once the changes have been identified, the replication process makes all the databases look the same. The replication process can be complex and time-consuming depending on the size and number of the distributed databases. This process can also require a lot of time and computer resources. Duplication, on the other hand, has less complexity. It basically identifies one database as a master and then duplicates that database. The duplication process is normally done at a set time after hours. This is to ensure that each distributed location has the same data. In the duplication process, users may change only the master database. This ensures that local data will not be overwritten.Both replication and duplication can keep the data current in all distributive locations.Besides distributed database replication and fragmentation, there are many other distributed database design technologies. For example, local autonomy, synchronous and asynchronous distributed database technologies. These technologies' implementation can and does depend on the needs of the business and the sensitivity/confidentiality of the data stored in the database, and hence the price the business is willing to spend on ensuring data security, consistency and integrity.When discussing access to distributed databases, Microsoft favors the term distributed query, which it defines in protocol-specific manner as "[a]ny SELECT, INSERT, UPDATE, or DELETE statement that references tables and rowsets from one or more external OLE DB data sources".Oracle provides a more language-centric view in which distributed queries and distributed transactions form part of distributed SQL.Today the distributed DBMS market is evolving dramatically, with new, innovative entrants and incumbents supporting the growing use of unstructured data and NoSQL DBMS engines, as well as XML databases and NewSQL databases. These databases are increasingly supporting distributed database architecture that provides high availability and fault tolerance through replication and scale out ability. Some examples are Cassandra, Clusterpoint, Riak.".
- Distributed_database wikiPageExternalLink ds_concepts.htm.
- Distributed_database wikiPageID "41054".
- Distributed_database wikiPageRevisionID "602845820".
- Distributed_database hasPhotoCollection Distributed_database.
- Distributed_database subject Category:Applications_of_distributed_computing.
- Distributed_database subject Category:Data_management.
- Distributed_database subject Category:Database_management_systems.
- Distributed_database subject Category:Distributed_computing_architecture.
- Distributed_database subject Category:Types_of_databases.
- Distributed_database type Abstraction100002137.
- Distributed_database type Application106570110.
- Distributed_database type ApplicationsOfDistributedComputing.
- Distributed_database type Code106355894.
- Distributed_database type CodingSystem106353757.
- Distributed_database type Communication100033020.
- Distributed_database type Program106568978.
- Distributed_database type Software106566077.
- Distributed_database type Writing106359877.
- Distributed_database type WrittenCommunication106349220.
- Distributed_database comment "A distributed database is a database in which storage devices are not all attached to a common processing unit such as the CPU, controlled by a distributed database management system (together sometimes called a distributed database system). It may be stored in multiple computers, located in the same physical location; or may be dispersed over a network of interconnected computers.".
- Distributed_database label "Banco de dados distribuídos".
- Distributed_database label "Bases de datos distribuidas".
- Distributed_database label "Database distribuiti".
- Distributed_database label "Distributed database".
- Distributed_database label "Rozproszona baza danych".
- Distributed_database label "Verteiltes Datenbankmanagementsystem".
- Distributed_database label "Распределённые базы данных".
- Distributed_database label "分布式数据库".
- Distributed_database label "分散データベース".
- Distributed_database sameAs Verteiltes_Datenbankmanagementsystem.
- Distributed_database sameAs Κατανεμημένες_Βάσεις_Δεδομένων.
- Distributed_database sameAs Bases_de_datos_distribuidas.
- Distributed_database sameAs Datu-base_banatu.
- Distributed_database sameAs Database_distribuiti.
- Distributed_database sameAs 分散データベース.
- Distributed_database sameAs 분산_데이터베이스.
- Distributed_database sameAs Rozproszona_baza_danych.
- Distributed_database sameAs Banco_de_dados_distribuídos.
- Distributed_database sameAs m.0b7tt.
- Distributed_database sameAs Q989016.
- Distributed_database sameAs Q989016.
- Distributed_database sameAs Distributed_database.
- Distributed_database wasDerivedFrom Distributed_database?oldid=602845820.
- Distributed_database isPrimaryTopicOf Distributed_database.