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What are the three classes of SQL expression?
SQL expression consists of three clauses:
Select
From
Where
Which method of access uses key transformation? A Hash method of access uses key transformation.
Why 'AS' clause is used in SQL ? 'As' clause is used for Rename operation. ‘AS' clause is used in SQL for rename operation. (e.g., SELECT ENO AS EMPLOYEE_NO FROM EMP)
The database application project (DAP) for this assignment consists of the creation of a fully functional Microsoft Access database application for a real client. I recommend you s
Difference between LEFT OUTER JOIN and RIGHT OUTER JOIN In left outer join tuples from the left-hand-side relation which do not match any tuple in the right-hand-side relation
What is the disadvantage of a call by reference? During a call by reference damage or loss of data is not restricted to the subroutine, but will instantly lead to alters to th
How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
deffine class&object
examples of fields in a database
what is the relationship between receipt and owner entities in computer sales and service company
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