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A data store is a repository of a set of data objects. These objects are modelled using classes defined in a database schema. A data store is a general concept that includes not just repositories like databases, but also simpler store types such as flat files etc. Some data stores represent data in only one schema, while other data stores use several schemas for this task. An example are RDBMS-based data stores like MySQL or PostgreSQL. ==Types== Data stores can be of different types, including: * Paper files * Simple files like a spreadsheet * File systems * Email storage systems (both server and client systems) * Databases * * Relational databases are the most common type of database in the 2000s. Examples include MySQL, PostgreSQL, Microsoft SQL Server, and Oracle Database.〔≥〕 * * Object-oriented databases, like Caché or ConceptBase. They can save objects of an object-oriented design. * Distributed data stores, like Apache Cassandra, Druid (open-source data store) or Dynamo * Directory services * VMware uses "datastore" to refer to a file that stores a virtual machine〔http://pubs.vmware.com/vi3/sdk/ReferenceGuide/vim.Datastore.html〕 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「Data store」の詳細全文を読む スポンサード リンク
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