primary key

短语

[计] 主关键字

词形变化

primary keys 复数 primary keys

别名

PK

释义与例句

n.
  1. 1.

    In the design of a database table, the primary key (abbreviated PK) is selected among the non-empty set of candidate keys. The PK is a column (or an irreducible group of columns) able to identify every row of the table.

    主键

    主码

    计算机 工程 数学