SQL Plus Interview Preparation Guide
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SQL Plus guideline for job interview preparation. Explore list of SQL Plus frequently asked questions(FAQs) asked in number of SQL Plus interviews. Post your comments as your suggestions, questions and answers on any SQL Plus Interview Question or answer. Ask SQL Plus Question, your question will be answered by our fellow friends.

20 SQL Plus Questions and Answers:

1 :: Please Explain Connect by Prior?

Retrieves rows in hierarchical order.e.g. select empno, ename from emp where.

"connect by prior" is clause which is used in hierarchical queries.Example
select ename,empno,mgr,job
from emp
start with job='PRESIDENT'
connect by prior empno=mgr;
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2 :: Explain ROWID?

ROWID is a pseudo column generated at the run time(during inserting value). Its a hexadecimal value which is unique identification for each record
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3 :: Explain Explicit Cursor attributes?

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4 :: Explain What is a database link?

Database Link is a named path through which a remote database can be accessed
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5 :: Explain What is a corelated subquery?

Correlated subquery is the subquery, where the subquery has been executed for the every row processed by the parent statement.
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