RE: In what situation we have to use alias& and in wh...
HiAlias can be used when there is less complexity in loops and few fact tables where as Context can be used to resolve loops when more fact tables are present in the universe design.
RE: In what situation we have to use alias& and in wh...
when we create alias or context we end up with Objects. If the objects you created is sounds like same then you can go for context. if the objects sounds different then you can go for alias. The main thing is that the best way to resolve the loop is alias.