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?
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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?
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Explain about network model?
Who are end users in dbms?
Explain about post-relational databases?
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You have a table with three columns: amount1, amount2, and amount3 in a single row only one of these three columns will have a value and the other two will be null. Write a sql query to retrieve the values from these columns?
What is the system function to get the current user's user id?
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