1. The fixed attribute item and the selection should be defined by constant, and the definition of constant item related information (general description) should be provided and the retrieval function should be provided;
2. Interface parameters should have a unified standard: what representative is empty
3. When writing APIs, you should first check the incoming parameters.
4. The API is trying to achieve atomicization. The operation of the database should first form a basic collection, including insertion, modification, deletion, etc. of each table; on this, these APIs are logical, handle business logic
5. Pay attention to the reuse of the page, such as C / S control, b / s sub-page
6. Issues that the page displayed in the page will be considered from the beginning.
