primary key constraint

• 1. 主键约束: PRIMARY KEY | primary key constraint | PK
• 2. 主键约束名: Primary key constraint name
• 3. 设置主键约束: primary key

更多释义

• 1.对于主键约束，有些数据库具有不同的功能。
  Some databases have different functionality for primary key constraints.
  dict.yoduao.com
• 2.对于主键约束，有些数据库具有不同的规则。
  Some databases have different rules for primary key constraints.
  dict.yoduao.com
• 3.引用唯一或主键约束，必须是父表中已经定义的。
  The referenced unique or primary key constraint on the parent table or view must already be defined.
  dict.yoduao.com

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