This paper discusses a new kind of pattern to database design pattern of strong entity infringing. This paper in detail analyses the pattern through two specific cases, and summaries its specific applied scenes. In the end of the paper, it discusses the relationship between the pattern and the four-atomization theories to database design. As we know, the four-atomization theory is the foundation
... [Show full abstract] of database design normalization, and seven design patterns are the approach of database design normalization [1]. Four-atomization theories are property atomization, entity atomization, PK atomization and relation atomization. Seven database design patterns are master-slave pattern, weak entity infringing pattern, strong entity infringing pattern, column changes line pattern, watermelon pattern, theme pattern and global pattern. Among them, strong entity infringing is very important, but it is the most difficult to be found, which is discussed in this paper.