How many parts does the database system consist of?

The database system consists of four parts: hardware, software, data and users.

1, hardware.

The hardware of the database system includes host, keyboard, monitor and peripheral devices, such as printers, CD players, tape drives, etc. Because the general database system stores and processes a large amount of data, DBMS has rich functional software and occupies a large storage space, so the whole database system puts forward higher requirements for hardware resources.

2. Software.

In addition to the database management system, the software of the database system also includes various advanced language processing programs of the operating system, application development tool software and specific application software. Application development tools include application program generator and the fourth generation language, such as report generation system, form software, graphic editing system, etc.

They provide strong support for application developers and end users of database systems. Specific application software refers to database application software developed for specific users, such as various management software based on database, management information system, decision support system, office automation and so on.

3. data.

Data is the basic component of database, the representation of things existing in the objective world, and the operation object of database users. Data is a database system and the real wealth of enterprises or organizations. Data should be collected as needed and stored in the database in a structured way. Due to the diversity of data types, data collection and storage methods will be different.

As a resource, data is the most stable part of the database system, that is, the hardware may be updated, even the software can be updated, but as long as the nature of the enterprise or organization remains unchanged, data will be a wealth that can be used for a long time. The data in the database has the characteristics of collection, sharing, minimum redundancy and being able to serve a variety of applications.

4. users.

Database users are the main body of managing, developing and using databases. According to different tasks, database users can usually be divided into three different types: end users, application programmers and database administrators.

Extended data:

Basic requirements of database system:

1, which can guarantee the independence of data. The independence of data and programs is conducive to speeding up software development and saving development costs.

2. Less redundant data and high data enjoyment.

3. The user interface of the system is simple and easy for users to master and use.

4. It is modifiable and extensible.

5, can fully describe the internal relationship between data.

Baidu Encyclopedia-Database System