The table is almost the same as below
Library A
Table 1 content

id catid areaid title content linkman 12 32 4 标题一 内容一 张三

Table 2 area

areaid areaname 4 中国

Table 3 category

catid catname 32 分类项一

Library B
Table z list
id add catg title contents username

Z table and 1 table correspond one to one
How can we improve the table in library b?