Do foreign keys improve performance?


No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More SQL PLSQL Interview Questions

Explain the types of joins in sql?

0 Answers  


What is trigger point?

0 Answers  


Can I learn sql in a week?

0 Answers  


Why is sql better than hql?

0 Answers  


real time applications of nullif?

3 Answers  






how can you create an empty table from an existing table? : Sql dba

0 Answers  


What is sql key?

0 Answers  


using cursors salesman get bonus as 10% of their salary , managers get 20% , analalist get 30%. generae a report showing the employee name, salary , bonus.

4 Answers   Fidelity,


What is meant by temporal data?

0 Answers  


what happens when the column is set to auto increment and you reach the maximum value for that table? : Sql dba

0 Answers  


I have one Excel file with 1,50,000 Records. Now I need to load that whole file into Oracle Database with same columns in Excel sheet . I need PLSQL Procedure or used by SQL PLUS

7 Answers   Polaris,


how to find the First and Last Observation from the table: Ex: OBS Name Sal Ans like: OBS Name Sal 105 E 5000--> 105 E 5000 102 B 2000 104 D 4000 103 C 3000 101 A 1000--> 104 D 4000

4 Answers  


Categories