Chapter harry DBMS DBMS Improved data sharing Better
Chapter１ 発表者 harry
DBMSのいいところ DBMSを持つことで、以下の６つのいいことがありま す。 Improved data sharing Better data integration Minimized data inconsistency Improved data access Improved decision making Increased end-user productivity
様々なデータベースには、様々なタイプがあり、呼び名も 違います。以下に簡単に示します。 Single-user database Desktop database Multiuser database Workgroup database Enterprise database
File system data management の 問題点 Lengthy development times Difficulty in getting quick answers Complex system administration Lack of security and limited data sharing Extensive programming
代表的な問題 Structural and data dependence Field Definition and Naming Conventions Data Redundancy
データベース構成要素 Hardware Software People Procedures Data
DBMSの機能 Data dictionary management Data storage management Data transformation and presentation Security management Multiuser access control Backup and recovery management Data integrity management Database access languages and application programming interfaces Database communication interfaces
データベースシステムの活用にあ たり、考えなくてはならないこと。 Increased costs Management complexity System maintenance Vendor dependence
- Slides: 17