Note, however, that we cannot update the primary key columns or any other key columns that you declare; in this case, EMP_ID is a primary key column.
但是请注意，我们不能修改您声明的主键列或任何其他的键列；在本例中，EMP _ ID是主键列。
When a standby database is open for read-only access, users can query the standby database but cannot update it.
当备库是以只读方式打开时，用户只能在备库上查询而不能更新它。
The state of a record updated by two users at the same time is undefined unless the system can guarantee that two users cannot update a record simultaneously.
由两个用户同时更新的记录的状态是未定义的，除非系统可以保证两个用户无法同时更新记录。
Edit and Continue cannot update a function on the call stack because code changes either removed a variable that requires construction or destruction or changed the variable's data type.
“编辑并继续”无法更新调用堆栈上的函数，因为代码更改或者移除了要求构造或析构的变量，或者更改了变量的数据类型。
Updatable Subscribers: Cannot update identity columns.
可更新订阅服务器：无法更新标识列。
Updatable Subscribers: Cannot update identity columns.
可更新订阅服务器：无法更新标识列。
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