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                # DBMS 中的數據視圖 > 原文: [https://beginnersbook.com/2015/04/view-in-dbms/](https://beginnersbook.com/2015/04/view-in-dbms/) 抽象是數據庫系統的主要特征之一。隱藏用戶不相關的細節并向用戶提供數據的抽象視圖,有助于用戶輕松高效地**與數據庫**交互。在前面的教程中,我們討論了[三層 DBMS 架構](https://beginnersbook.com/2018/11/dbms-three-level-architecture/),該架構的頂層是“視圖層次”。視圖層次向用戶提供“**數據**”視圖,并隱藏用戶無關的詳細信息,如數據關系,數據庫模式,[約束](https://beginnersbook.com/2015/04/constraints-in-dbms/),安全性等。 要完全理解數據視圖,您必須具備數據抽象以及實例和模式的基本知識。請參閱這兩個教程以詳細了解它們。 1. [數據抽象](https://beginnersbook.com/2015/04/levels-of-abstraction-in-dbms/ "Data Abstraction in DBMS") 2. [實例和模式](https://beginnersbook.com/2015/04/instance-and-schema-in-dbms/ "Instance and schema in DBMS")
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