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A centralised database (sometimes abbreviated CDB) is a database that is located, stored, and maintained in a single location. This location is most often a central computer or database system, for example a desktop or server CPU, or a mainframe computer. 〔http://ict.stmargaretsacademy.org.uk/isint2/infosystems/centraldb.html〕 In most cases, a centralised database would be used by an organisation (e.g. a business company) or an institution (e.g. a university.) Users access a centralised database through a computer network which is able to give them access to the central CPU, which in turn maintains to the database itself.〔http://ib2012-itgs.wikispaces.com/file/view/Centralised+Vs+Distributed.pdf〕 All of the information stored on the CBS is accessible from a large number of different points, which in turn creates a significant amount of both advantages and disadvantages. ==Historical context== The first ever created computers were overly expensive and did not have separate terminals. Thus, the need for centralised computing quickly arose. As a result, a way for data to be not just be processed, but to also be organised and stored was discovered. This gave way to the earliest versions of databases, their respective database management systems (DBMS) and, in turn, centralised databases.〔http://www2.cffn.ca/usha/part-iii-article-by-pramod-dhakal/129-the-law-of-rule-centralized-decentralized-and-distributed-systems〕 With the growing popularity of computers, more and more types of database orientation and design were introduced. Centralised databases however are still used today, especially where storing and processing data in large enterprises is concerned.〔http://www.differencebetween.com/difference-between-distributed-database-and-vs-centralized-database/〕 An example for a centralised database could be given with the Australian Department of Defence, which centralised their databases in the mid 1970s. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「centralized database」の詳細全文を読む スポンサード リンク
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