Software engineering is a discipline that studies the construction and maintenance of effective, practical and high-quality software by engineering methods. It involves programming languages, databases, software development tools, system platforms, standards, design patterns and so on.            In modern society, software is applied in many aspects. Typical software includes e-mail, embedded system, man-machine interface, office suite, operating system, compiler, database, game and so on. At the same time, almost all industries have computer software applications, such as industry, agriculture, banking, aviation, government departments and so on. These applications promote the economic and social development, and also improve the efficiency of work and life.

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