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A logical schema is a data model of a specific problem domain expressed in terms of a particular data management technology. Without being specific to a particular database management product, it is in terms of either relational tables and columns, object-oriented classes, or XML tags. This is as opposed to a conceptual data model, which describes the semantics of an organization without reference to technology, or a physical data model, which describes the particular physical mechanisms used to capture data in a storage medium. The next step in creating a database, after the logical schema is produced, is to create the physical schema. ==See also== *Database schema *Logical data model de:Schema (Informatik) ja:論理スキーマ ru:Схема базы данных 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「logical schema」の詳細全文を読む スポンサード リンク
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