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What do you understand by a view? What does WITH CHECK OPTION clause for a view do?
- A view is a virtual table which comprises fields from one or more real tables.
- It is generally used to join multiple tables and get the data.
- WITH CHECK OPTION for a view prevents any modification to the data that doesn't confirm to WHERE clause of the view definition.
- This allows data belonging to the view to be updated through view.
List and explain the memory constructs of the Oracle 12c databases?
When is a transaction rolled back? Any changes that the aborted transaction made to the database must be uncompleted. While the changes caused by an aborted transaction have be
what are information system hirarchy?
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
How the time stamps are implemented Use the value of the system clock as the time stamp. That is a transaction's time stamp is equivalent to the value of the clock when the tra
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Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
What are the object-oriented approaches Software systems which are designed with structured design methodology never support some of desired quality attributes for example reus
I need help with some assignments
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
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