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。
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。
For example, one cannot use identity columns or timestamps for the partitioning column, but the partitioning column has to be part of the primary key.
例如，我们无法针对分区的列使用标识列或者时间戳，而分区列需要是主键的组成部分。
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 noyes yes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。
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。
Alternatively, you could define the primary key to use Identity value generation at the time you were defining the table and adding the primary key column itself.
您还可以选择，定义主键值，来在定义表格和添加主键值列本身时使用identity值生成。
The itemNumber column provides a unique identity for each item (or row) and has an attached column-level constraint that enforces a valid value to always be supplied (NOT NULL).
itemNumber列提供了每个商品（或列）的惟一标识，它上面还有列级约束，强制要求提供正确的值（NOT NULL）。
You may consider an alternative of using a simple single-column identity clustering key, and creating an indexed view clustered around the 3 columns.
你可能会考虑使用一个简单的另一个单列身份集群键，并创建一个索引视图聚集在3列。
Set if the column contains a persistent row identifier that cannot be written to, and has no meaningful value except to identity the row.
如果列包含无法写入的不变的行标识符，并且除了标识行外没有其他有意义的值，则设置该值。
Set if the column contains a persistent row identifier that cannot be written to, and has no meaningful value except to identity the row.
如果列包含无法写入的不变的行标识符，并且除了标识行外没有其他有意义的值，则设置该值。
应用推荐