State the difference between a primary key and foreign key?
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What is the difference between count (*), count (expression), count (distinct expression)?
What privilege is needed for a user to query tables in another schema?
What happens if variable names collide with table/column names?
what is the difference between sql& oracle?
Is it possible to join two tables, that are in two different users (e.g. SCOTT and HR etc.),but im same database (e.g. ORCL)? If yes, then how it is possible? Explain with step by step procedure.
types of indexes and the rationale behind choosing a particular index for a situation.
What are the different types of modules in oracle forms?
What is the purpose of save points in oracle database?
What are the differences between number and binary_float in oracle?
How do I find my oracle client driver version?
What is tns entry?
What is a snapshot log?