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How the time stamps are implemented
Use the value of the system clock as the time stamp. That is a transaction's time stamp is equivalent to the value of the clock when the transaction enters the system.
Use a logical counter that is increased after a new timestamp has been assigned; that is the time stamp is equivalent to the value of the counter.
About Attribute inheritance
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
CAN SOMEONE HELP ME WITH ENTITY DIAGRAMS IN FIRST NORMAL FORM?
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