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Can you instantiate a COM object by using T-SQL?
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What are the types of database model?
Explain about the hierarchical model of the database?
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 are the three basic rules which are to be followed for the relational model of the database?
Explain about normal forms?
Explain the family trees and connection by clause.
Explain about a primary key?
There is a trigger defined for INSERT operations on a table, in an OLTP system. The trigger is written to instantiate a COM object and pass the newly insterted rows to it for some custom processing. What do you think of this implementation? Can this be implemented better?
What is a self join? Explain it with an example?
Why does this query return 0?
What is the difference between a primary index and a secondary index? What is a duplicate data entry in an index? Can a primary index contain duplicates?
Pgm A calls Pgm B and pgm B uses cursor, when pgm B is called second time, the program is abending saying the cursor is opened? Why?
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