DBMS Programming and Technical Programming Technical

how to print 3rd highest salary in tha salary table?

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DBMS Other Question

What does isolation in Acid rules for transaction in database mean?
a)either the effects of whole transaction is reflected on database or database is rolled back to its original state
b)No transaction can interfere in the end result of another transaction
c)effects of a successful transaction must persist in a database
d)Every individual transaction must leave database in a cosistent state .maintaining the integrity of the database
What is use of DBMS and Big Data and What is the difference between them?