Database Administrator (DBA) Question:

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What is an index and How it is implemented in Oracle database?

Database Administrator (DBA) Interview Question
Database Administrator (DBA) Interview Question

Answer:

INDEX is a one which provides quick access to a row.

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What are the Coordination Properties in a Master-Detail relationship?Lot of users are accessing select sysdate from dual and they getting some millisecond differences. If we execute SELECT SYSDATE FROM EMP; what error will we get. Why?