Tuesday, November 20, 2012

Pre-interview questions

This is updated post with all pre-interview questions discovered in recruiter's emails. Here is no questions asked on interview with pre-signed agreement do not share its details.

Set #1
  • What is the difference between a Matrix and Matrix with group report?
  • Can you  explain the difference between Group By and Partition By clauses?
  • What are the analytical functions available in Oracle?
  • What is the difference between Single and Correlated sub-queries?
  • What is query to get first day of the last quarter?
  • How can you tell if an UPDATE updated no rows, in SQL and PL/SQL?
  • Difference between DELETE, TRUNCATE and DROP?
  • Difference between Primary, Unique and Foreign keys?
  • How to debug PL/SQL code?
  • Explain the difference between implicit and explicit cursors?
Set #2


  • What are clusters?
  • Explain some of the commonly used Predefined PL/SQL Exceptions
  • What is a Materialized view?
  • What is the Networkdblink?
  • Predefined exceptions and explanation?
  • Difference b/w view and meterialized view?






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