Database construction mainly includes: requirements analysis, conceptual structure design, logical structure design, physical structure design, database implementation and database operation and maintenance.

1. Requirements analysis:

Requirements analysis is based on user surveys and analysis to gradually clarify user needs for the system, including data needs and business processing around these data. Requirements, security and integrity requirements.

2. Conceptual structure design:

This conceptual model should reflect the information structure of various departments in the real world, the flow of information, the mutual constraints between information, and the information storage and storage of each department. Inquiry and processing requirements, etc.

3. Logical structure design:

Convert the conceptual structure into a data model (such as a relational model) supported by a certain DBMS, and optimize it.

4. Physical structure design:

Design the storage structure and access method of data, such as index design; convert the conceptual structure into a data model supported by a certain DBMS (such as relational model) and optimize it.

5. Database implementation:

Use the data language (such as SQL) and its host language (such as C) provided by the DBMS to establish a database based on the results of logical design and physical design. Compile and debug applications, organize data into the database, compile applications, and conduct trial runs.

6. Database operation and maintenance:

The database application system can be put into formal operation after trial operation. During the operation of the database system, long-term maintenance work is required, and it must be continuously evaluated, adjusted and modified.