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Database application paper
The database design application file includes six main steps:

1, requirement analysis: understand the user's data requirements, processing requirements and security integrity requirements;

2. Conceptual design: through data abstraction, the conceptual model of the system is designed, generally the E-R model;

3. Logical structure design: design the mode and external mode of the system. For the relational model, it is mainly the basic tables and views;

4. Physical structure design: design data storage structure and access method, such as index design;

5. System implementation: organizing data storage, writing application programs and trial operation;

6. Operation and maintenance: The system is put into operation and maintained for a long time.