In contrast, no checking is performed when records are added to the key columns of a parent table.
与之相反，当记录被添加到父表的键列时，不执行检查。
The parent table in the left panel shows all the parent objects of any selected object in the tree.
左面板中的父表显示了树中任何所选对象的所有父对象。
Any row in the parent table can be selected to expand the tree to the location of the selected parent object.
可以选择父表中的任何行，将树扩展到所选父对象的位置。
The delete rule controls how delete operations performed against a parent table in an RI relationship are processed.
Delete规则控制对RI关系中父表执行的删除操作的处理方法。
The latter is actually a primary key lookup against the parent table and constitutes the foreign key constraint verification.
索引扫描实际上是对父表进行主键查找，并完成外键约束验证。
The referenced unique or primary key constraint on the parent table or view must already be defined.
引用唯一或主键约束，必须是父表中已经定义的。
Specifies the expression based on fields in the parent table that relates to an index in the child table.
指定基于父表中的字段而又与子表中的索引相关的表达式。
Shows how to ensure the selected row of a child table does not change, when a change is made to a field of the parent table.
演示如何确保在更改父表的字段时，子表的选定行不会发生改变。
An update operation could change a record in a child table such that it no longer has a matching record in the associated parent table.
一个更新操作可改变子表中的一条记录，这样相关父表中不再有一条匹配的记录。
An update operation could change a record in a parent table, leaving records in an associated child table that no longer have a matching record in the parent table.
一个更新操作可改变父表中的一条记录，使得相关子表中的记录在父表中没有与之匹配的记录。
A delete operation could remove a record from a parent table, leaving records in an associated child table that no longer have a matching record in the parent table.
一个删除操作可以从一个父表中删除一条记录，使得相关子表中的记录在父表中没有与之匹配的记录。
A delete operation could remove a record from a parent table, leaving records in an associated child table that no longer have a matching record in the parent table.
一个删除操作可以从一个父表中删除一条记录，使得相关子表中的记录在父表中没有与之匹配的记录。
应用推荐