Shulou(Shulou.com)05/31 Report--

The editor will share with you what are the characteristics of the database system. I hope you will gain something after reading this article. Let's discuss it together.

The characteristics of the database system: 1, the overall data structure, that is, any data in the database does not belong to any application, the data is public, the structure is comprehensive; 2, the sharing of data is high; 3, the independence of data is high; 4, high data control ability.

Database system (Database System) is a system composed of database and its management software.

Database system is an ideal data processing system developed to meet the needs of data processing, and it is also a software system that provides data for practical operational storage, maintenance and application systems. it is a collection of storage media, processing objects and management systems.

Characteristics of database system

1. Overall data structure

Any data in the database does not belong to any application, the data is public and the structure is comprehensive. In the database, the number of data files is limited and fixed, but the application of the database system is unlimited.

Benefits: the structure of the overall data can reduce or even eliminate unnecessary data redundancy, thus saving the storage space of the overall data and avoiding data inconsistency and incompatibility (the data does not meet the prescribed constraints).

2. High degree of data sharing

The data and the logical structure of the data are stored in the database at the same time, when displaying the data, the logical structure of the data can be displayed at the same time; the overall data of the whole organization is comprehensively considered, and the overall data is structured. Therefore, DBS has a high degree of data sharing.

Benefits: legitimate users can easily access and use the data in the database, and do not have to worry about data inconsistency and incompatibility. The data in the database can adapt to the reasonable requirements of all kinds of legitimate users and the requirements of various applications, and can easily expand new applications.

3. High independence of data.

The independence of data refers to the relationship between the data and the application. Data and data structure are stored in the database (on external memory) and managed by DBMS. The application stores neither data nor its logical structure.

Physical independence: when the century storage mode of the data in the database changes, DBMS can appropriately change the way of transforming the data, so that the logical structure of the data remains unchanged, so that the application program that deals with the data remains unchanged.

Logical independence: when the logical structure of the data in the database changes, DBMS can change the conversion mode of the data appropriately, and the logical structure of the data remains unchanged for users.

Advantages: data and programs are independent of each other, so it is convenient to compile all kinds of application programs, which greatly reduces the maintenance work of application programs.

4. High data control ability

Higher security

Better data integrity

Strong concurrency control ability

Strong data recovery ability

After reading this article, I believe you have a certain understanding of "what are the characteristics of the database system". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for your reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.