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What is the difference between the function module and a normal ABAP/4 subroutine?In contrast to normal subroutines function modules have uniquely exact interface. Declaring data as common parts is not possible for function modules. Function modules are kept in a central library
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
external and internal mapping with examples
Example -GRANT CREATE SESSION TO MCA12; (This command gives system level permission on creating a session - not portable) GRANT SELECT ON EMP TO MCA12; (Object level permi
During the deletion of a tuple two cases can happen: Deletion of tuple in relation having the foreign key: In this type of case simply delete the desired tuple. For example, in
The Conceptual Level or Global level The conceptual level presents a logical view of the complete database as a unified whole. It permits the user to bring all the data in th
What is a Phantom Deadlock? In distributed deadlock detection, the delay in propagating local information might cause the deadlock detection algorithms to recognize deadlocks
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
Describe a technique for direct search? Explain how data is stored within a file so which direct searching can be performed. For a file of unordered fixed length records by u
Explain about database system structure? Storage manager Authorization and integrity manager Transaction manager File manager Buffer manager Storage manager
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
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