What is the composition of a data system, what is the composition of a database system?

A database system generally consists of 4 parts:

1) A database (DB) is a collection of organized, shareable data stored in a computer for a long time. The data in the database is organized, described and stored according to a certain mathematical model, with small redundancy, high data independence and easy scalability, and can be shared by various users. (2) Hardware: The various physical devices that make up a computer system, including external devices required for storage.

The configuration of the hardware should meet the needs of the entire database system; (3) Software: including operating systems, database management systems and applications. Database management system (DBMS) is the core software of the database system, which is a system software that works with the support of the operating system to solve how to organize and store data scientifically and how to efficiently obtain and maintain data.

Its main functions include: data definition function, data manipulation function, database operation management and database establishment and maintenance; (4) Personnel: There are four main categories.

The first category is system analysts and database designers: system analysts are responsible for the requirements analysis and specification of the application system, they work with users and database administrators to determine the hardware configuration of the system, and participate in the outline design of the database system. The database designer is responsible for the determination of the data in the database and the design of the database schema at all levels; The second type is the application worker, who is responsible for writing applications that use databases.

These applications can retrieve, create, delete or modify data; The third category is the end user, who uses the system's interface or query language to access the database; The fourth type of user is the Data BaseAdministrator (DBA), who is responsible for the overall information control of the database.

The database system is generally formed by the combination of four parts: hardware, software, database and personnel, and provides users with information services. Hardware: The physical support of the database system, including CPU, memory, external memory, and input and output devices.

A database system (DBS) usually consists of hardware, software, databases, and users, and manages data. The software mainly includes operating systems, various host languages, utilities, and database management systems. The database system consists of four major components:

Users, data, software, and hardware.

A database system (DBS) is usually composed of software servers, databases, and data administrators. Its soft Joy Sen components mainly include operating systems, various host languages, utilities, and database management systems.

Data is the basic component of the database, a representation of the things that exist in the objective world, and it is also the operation object of the database user. Data is a database system and the real asset of a business or organization. Data should be collected as needed and stored in a structured database.

The database system is generally composed of a database, a database management system (and its tools), an application system, and a database administrator. Purpose: To store information and support users in retrieving and updating the information they need.

1. Database (DB).

The role is that the data in the database is organized, described and stored according to a certain mathematical model, and the data is organized and shareable. It has less redundancy, high data independence and easy scalability, and can be shared by various users.

2. Hardware. The various physical devices that make up a computer system, including external devices required for storage. The function is that the configuration of hardware should meet the needs of the entire database system.

3. Software. This includes operating systems, database management systems, and applications. The database management system is the core software of the database system, which is the system software that works with the support of the operating system, scientifically organizes and stores data, and efficiently obtains and maintains data.

Its main functions include: data definition function, data manipulation function, database operation management and database establishment and maintenance;

4. Personnel. The main classification and its role are system analysts and database designers, who are responsible for the requirements analysis and specification description of the application system, determine the hardware configuration of the system, and participate in the outline design of the database system; Application scientist, who is responsible for writing applications that use the database and accessing the database using the system's interface or query language; The database administrator is responsible for the overall information control of the database.