A DBA friend Wolf summarizes a number of principles on this aspect, in fact, when we design also inadvertently also follow these principles, used to share with you, especially these days Responding to interview programmers, resume write proficient on database design, and asked to say a few paradigms, other redundant data is garbage, even really compare ashamed ah. . . .
No nonsense, the following principles:
If you have other principles, can thread, thank you!
No nonsense, the following principles:
Anti-standardized design
To improve the performance and use of anti-standardized design
Method used:
A, a plurality of tables stored in a field in the copy
B, summary values stored in the parent table
C, the activity data and historical data is stored separately from
D, the local cache data application
E, using temporary tables, intermediate table , indexed views
If you have other principles, can thread, thank you!
Reproduced in: https: //www.cnblogs.com/perfectdesign/archive/2008/07/14/databasedesign.html