once we have identified the class being identified and its mapping table, we need to specify the identity property of the class and its corresponding identity column in the mapping table.
我们已经标识了类和类对应的映射表,接下来我们需要标识类的标识属性和映射表中的标识列。
shows whether the selected column is the identity column for the table.
显示选取的资料行是否为资料表的识别资料行。
shows whether the selected column is the identity column for the view.
显示所选取的资料行是否为检视表的识别资料行。
allows explicit values to be inserted into the identity column of a table.
允许将显式值插入表的标识列中。
there are many options that you can use when you create the identity column and sequence object.
在创建identity列和sequence对象时,可以使用很多选择。
changes to properties of an identity column on a table, such as the identity seed.
对表中标识列的属性(如标识种子)进行了更改。
identitymissing no yes yes specifies that the import or load input file does not contain any values for the identity column in the target table. given load input file custdata.del
identitymissing noyesyes指定导入或载入输入文件不包含任何目标表中标识列的值。
identity properties pertain to identity columns, which guarantee the uniqueness of the row to which the identity column belongs.
标识属性是标识列固有的,用于确保标识列所属的行的唯一性。
a column can be specified as an identity column when the table is created.
在创建表时,可以将某个列指定为identity列。
you can add an identity column in the table.
感谢各位的意见, 看来只能再增加一个栏位了!
specify the record identity column in the customers table; and
指定customer表记录的标识列
listing 5 shows the modification to your column definitions to reset generated identity column numbering.
清单5显示了用于重置所生成标识字段计算的字段定义。