资料内容：
Database technology is a technology developed earlier in computer science,
having experienced nearly 60 years of history since its birth in the early
1960s. Now, database technology has developed from the early stage of
simply saving and processing data files to a rich comprehensive discipline
with data modeling and DBMS as the core, as the foundation and core of
modern computer application system. With the continuous refinement of
“Internet+”, big data, AI and data mining technologies in recent years,
database technology and products are changing day by day. This chapter will
give a brief introduction to the basic knowledge and concepts of database.
1.1 Overview of Database Technology
Database technology is an effective technology used for data management. It
studies how to manage data scientifically so as to provide people with
shareable, secure and reliable data. It involves four important concepts, as
shown in Fig. 1.1, which are introduced below.
