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Suppose you want to get answers to r join s | | sorted on an attribute of r , and want only the top K
Suppose you want to get answers to r join s sorted on an attribute of and want only the top answers for some relatively small Give a good way of evaluating the query: i When the join is on a foreign key of referencing where the foreign key attribute is declared to be not null. ii When the join is not on a foreign key.
Suppose you want to get answers to r join s sorted on an attribute of and want only the top answers for some relatively small Give a good way of evaluating the query:
i When the join is on a foreign key of referencing where the foreign key attribute is declared to be not null.
ii When the join is not on a foreign key.
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