Any good SQL Server database will use constraints and other DRI in order to maintain integrity and increase performance. The violation of any constraints leads to an error, and it is rare to see this handled well. Autocommit transaction mode. Letâs create a table that allows us to be able to make a couple of different constraint violations. Youâll have to imagine that this is a part of a contact database that is full of constraints and triggers that will defend against bad data ever reaching the database. Naturally, there will be more in this table.
To set the time and date on your digital watch, press the Adjust button twice to access the Time and Date display. Press and hold the Adjust button to until the Time digits begin to flash. Use the Start/Stop and Split/Reset buttons to set your digital watch to the correct hour and minute increments. Press Mode to display the Date setting screen.
Most watches with date require you to manually adjust the date depending if the month has 30 or 31 days (or 28/29 for February). Only watches that donât require this are âperpetual calendarâ or âperpetual dateâ watches, these already have pre-programmed dates, usually for 99 years ahead.