Numerical values obtained from scientific experiments, inspections, statistics, etc. It is also used in scientific research, technical design, verification and decision-making.

In the computer system, all kinds of letters, combinations of digital symbols, sounds, graphics and images are collectively called data, and the data becomes information after processing.

Database:

A database is an organized, shared and unified collection of data stored in a computer for a long time. She is a computer software system that stores and manages data according to data structure. The concept of database actually includes two meanings: (1) A database is an entity and a "warehouse" that can reasonably store data. Users store the transaction data to be managed in this "warehouse", and the concepts of "data" and "library" are combined to form a database. (2) Database is a new data management method and technology, which can organize data more appropriately, maintain data more conveniently, control data more strictly and use data more effectively.

Database management system:

Database management system (dbms) is a large-scale software for manipulating and managing databases, which is used to establish, use and maintain databases. It manages and controls the database in a unified way to ensure the security and integrity of the database. Users access the data in the database through dbms, and database administrators also maintain the database through dbms. It provides a variety of functions, enabling multiple applications and users to establish, modify and query databases in different ways at the same time or at different times. It enables users to define and manipulate data conveniently, maintain the security and integrity of data, and carry out concurrent control and database recovery under multi-users.

Database system:

Database system is a system composed of database and its management software. It is an ideal data processing core institution developed to meet the data processing needs. It is a practical software system for storing, maintaining and applying data, and it is a collection of storage media, processing objects and management systems.

Database system is a system composed of database and its management software. It is an ideal data processing core institution developed to meet the data processing needs. It is a practical software system for storing, maintaining and applying data, and it is a collection of storage media, processing objects and management systems.

Database system DBS (abbreviated as DBS) is a practical software system for storing, maintaining and applying data, and it is a collection of storage media, processing objects and management systems. It usually consists of software, database and data administrator. Its software mainly includes operating system, various host languages, utilities and database management system. The database is managed by the database management system, and the insertion, modification and retrieval of data should be carried out through the database management system. The data administrator is responsible for creating, monitoring and maintaining the entire database so that anyone who has access to the data can use the data effectively. Database administrators are generally people with higher professional level and deeper qualifications.