请检查确认建议的主键字段永远不包含重复值。

The team should look for and discard ideas which are obvious duplications of one another.

youdao

“关联名称”， 父关联主键字段， 子关联外来键字段。

What is the relation of theme and it's derived theme.

youdao

所以，在book表这个示例中，有一个主键字段叫做book_id。

So, in the case of the book table, there is a primary key field called book_id.

youdao

每个表有一个用作主键的id字段。

Each table has an id field that serves as the primary key.

youdao

主键由区分不同记录的一个或多个字段组成。

A primary key consists of one or more fields that differentiate one record from another.

youdao

将字段设为主键会自动将字段定义成唯一的。

Setting a field as the primary key automatically defines the field as unique.

youdao

将字段设为主键会自动将字段定义成唯一的。

Setting a field as the primary key automatically defines the field as unique.

youdao