CPs are preprogrammed interaction patterns or protocols and are used to specify the message formats, sequencing constraints, and timing constraints that define the interaction protocol.
The vote is not binding on the FDA, but approval would lend powerful support for a final decision by the agency charged with protecting the nation's food and drug supplies.
3
要确保指定的键在特定时间段内是惟一的,可以指定主键约束BUSINESS_TIME WITHOUT OVERLAPS作为包含其他键的列表中的最后一项。
To enforce that specified keys are unique with respect to the specific time period, specify the primary key constraint BUSINESS_TIME WITHOUT OVERLAPS as the last item with the list of other keys.