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What are the three classes of SQL expression?
SQL expression consists of three clauses:
Select
From
Where
What is the function of SQL Server Agent Windows service? - It's a Windows service that handles tasks scheduled within SQL Server environment. These tasks are also known as job
Define upgrade and downgrade? It gives a mechanism for conversion from shared lock to exclusive lock is called as upgrade. It gives a mechanism for conversion from exclusive
what is inverted and multilist structure
write a database program for concurrency transaction in a bank
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
File Manager File manager handles the allocation of space on disk storage. It starts and maintains the list of structures and indices described in the internal schema that is
Creating views with check option : This option limits those updates of data values that cause records to go off the view. The following instance tells this in more detail: Examp
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
What do you mean by atomicity and aggregation? Atomicity : Either all actions are carried out or none are. Users should not have to worry about the effect of incomplete trans
what is the importance of back up files
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