Briefly describe the basic principles of database design

The basic principles of database design: 1. The consistency principle ensures the consistency and validity of the data; 2. The integrity principle ensures the correctness and compatibility of the data; 3. The security principle; 4 , Principles of scalability and extensibility; 5. Principle of standardization.

Basic principles of database design:

1) Consistency principle: Unify and systematically analyze data sources Analysis and design, coordinating various data sources to ensure data consistency and validity.

2) Integrity principle: The integrity of the database refers to the correctness and compatibility of the data. It is necessary to prevent legitimate users from adding unsemantic data to the database when using the database. There must be an audit and constraint mechanism for data input into the database.

3) Security principle: Database security refers to protecting data and preventing illegal users from using the database or legitimate users from illegally using the database to cause data leakage, alteration or destruction. There must be an authentication and authorization mechanism.

4) Principles of scalability and scalability: The design of the database structure should fully consider the needs of development and transplantation, and have good scalability, flexibility and moderate redundancy.

5) Standardization principle: The design of the database should follow the standardization theory. Standardized database design can reduce exceptions and errors during database insertion, deletion, modification and other operations, and reduce data redundancy.

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