What is the main purpose of using a database?
The main purpose of applying the database is to solve the problem of data sharing. The data in the database has the characteristics of "integration" and "sharing", that is, the database concentrates the data of various applications, structures and stores them uniformly, so that they can be used by different applications.
#The operating environment of this article: windows10 system, thinkpad t480 computer.
The main purpose of application database is to solve the problem of data sharing.
Database technology is developed on the basis of file systems. The biggest disadvantage of the file system is data redundancy and data cannot be shared. In addition, the expansion of data management scale and the sharp increase in data volume have led to the emergence of database technology. It can be seen that the main purpose of applying database is to solve the problem of data sharing.
Database technology is an important part of modern information science and technology and the core of computer data processing and information management systems. Database technology studies and solves the problem of effectively organizing and storing large amounts of data in computer information processing, reducing data storage redundancy, realizing data sharing, ensuring data security, and efficiently retrieving and processing data in database systems.
Features
From the perspective of system development, database application systems have two aspects: structural characteristics and behavioral characteristics.
1. Structural characteristics
Structural characteristics are related to the database state, that is, to the static characteristics of the entities reflected in the data model and the relationships between them. Structural design is to design database schemas at all levels. Determining the information content of the database system is implemented by database design.
2. Behavioral characteristics
Behavioral characteristics are related to database state transitions, that is, operations that change entities and their characteristics. It determines the functionality of the database system and is the design of applications such as transaction processing.
According to the characteristics of the system's structure and behavior, the system design and development is divided into two parts. One part is the database design as the core and cornerstone of the database application system, and the other part is the design and development of the corresponding database application software. . These two parts are closely related and complementary to each other, forming a unified database project.
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