常德网络建站,网站上传连接失败的原因,摄影网站制作步骤html,网站建设中faqs的意思PK - Primary Key
IX - Non-Unique Index
AK - Unique Index (AX should have been AK (Alternate Key))
CK - Check Constraint
DF - Default Constraint
FK - Foreign Key
UQ - Unique ConstraintPK - Primary Key
IX - Non-Unique Index
AK - Unique Index (AX should have been AK (Alternate Key))
CK - Check Constraint
DF - Default Constraint
FK - Foreign Key
UQ - Unique Constraint
