What is an exception in pl/sql?
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What is a pdo connection?
Can you have more than one key in a database?
How do you handle exceptions. Give the syntax for it?
what are all different types of collation sensitivity? : Sql dba
write a query to find 4th max salary
1.when will you use week refcursor and when will you use strong ref cursor ? 2.what is the use of sql trace..how do you use it ? 3.can you please send all the sql plus commands...like set line 6000....
What are the different types of joins and explain them briefly.
What is oracle pl sql developer?
Can you selectively load only those records that you need? : aql loader
what is error ora-03113: end-of-file on communication channel?
Explain cursor types?
diff b/w function and procedure?
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