2.What is loop? How resolve the loop?explain it?
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Answer Posted / rahul tandon
Loop is a situation in the BO universe design process. A
circular path of joins is formed between the tables. The
SQL queries are not able to interpret the joins; this
results in the wrong results from the queries; often less
records are retrieved than the actual number of records.
A loop situation can be resolved by Aliases and Contexts.
Make sure to break the joins(circular path) by aliasing the
table(dimension table) which has 1n's coming out of it from
both the end. The path then gets broken and ends as two
different path, one ending at the original dimension table
and the other at the aliased table(of that dimension). Both
of the paths now convey a differnt business case scenario
and depending upon the scenario a particlar path(query has
to be fired).
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