没有很多细节很难在你确切的情况发表评论,但这里的组织你的MySQL数据库结构的方式:
TABLE table1
INT id
... other data ...
TABLE table2
INT id
INT table1_id FOREIGN_KEY table1
... other data ...
TABLE table3
INT id
INT table2_id FOREIGN_KEY table2
... other data ...
TABLE table4
INT id
INT table3_id FOREIGN_KEY table3
... other data ...
并为您的网站网址结构可能是:
/table1/add
/table2/add?table1_id=T1_ID
/table3/add?table2_id=T2_ID
/table4/add?table3_id=T3_ID
/table1/(edit,delete)/T1_ID
/table2/(edit,delete)/T2_ID
/table3/(edit,delete)/T3_ID
/table4/(edit,delete)/T4_ID
用于添加到table2,3,4:
INSERT INTO table2 (data, table1_id) VALUES(data, T1_ID);
对于从表1删除:
DELETE FROM table1 WHERE id = T1_ID;
$t2_ids = SELECT id FROM table2 WHERE table1_id = T1_ID;
DELETE FROM table2 WHERE table1_id = T1_ID;
$t3_ids = SELECT id FROM table3 WHERE table2_id IN ($t2_ids);
DELETE FROM table3 WHERE table2_id = $t2_ids;
$t4_ids = SELECT id FROM table4 WHERE table3_id IN ($t3_ids);
DELETE FROM table4 WHERE table3_id = $t3_ids;
等等,如果你是从子表中删除。
另外,如果你在每个表中的数据也不是很不同的,你可以使用一个表来维护父/子关系
TABLE table
INT id
INT parent_id
... other data ...
你的URL结构不会有太大变化,但您的删除伪代码可以被优化以在表格本身上使用子选择。