What is entity and its types?
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What is a key field?
What do you mean by cardinality and its types?
How are exceptions handled in pl/sql? Give some of the internal exceptions name?
What are five main functions of a database administrator?
Define entity set.
select Nth highest salary by using rownum
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What are the basic functions of a database?
What is hot backup and how it can be taken ?
What is super key in dbms?
You loss one datafile and DB is running in ARCHIVELOG mode. You have full database backup of 1 week old and partial backup of this datafile which is just 1 day old. From which backup should you restore this file?
Explain the terms ‘attribute’ and ‘relations’
Why is data modelling important?