You are testing the performance of a query the first time you run the query, the performance is slow. the second time you run the query, the performance is fast. why is this?
What is a join and explain different types of joins?
To convert IDMS to DB2, how to deal with IDMS occurs and redefined clause?
Hi my program is accesing data from two db2 databases.what is the bind card for this program to genarate plan? how to specify the two owners and two qualifiers in bind card
How to create an external table.
how to find the first two highest salaries in deptno in emp table
You have two tables with a one to many join based on a field named id. You need to find records in the parent table that are not represented in the child table. how would you accomplish this?
Can you instantiate a COM object by using T-SQL?
Explain about network model?
Does QTP Support the Propjects which are running in Dot Net? As we are starting with new project in Dot net need to use automation tool?Please advice & let me know what would be the best.
How can I detect whether a given connection is blocked?
explain detail about ftp in datastage?
what is difference between primary key and unique key ?