Difference between joins that we mention in LTS and the one in Business dia

Hi Gurus,
Can anyone please share the exact difference between the joins in the LTS of logical table and the one that we use in business diagram.
Let me put this clearly.
1.we can map a logical table source with other physical tables and mention the type of join to be used. when this approach should be used.
2.We can also mention the type of join between the 2 logical tables while defining a join between 2 logical tables. when this should be used.
Thanks in advance.........

Hi,
1.we can map a logical table source with other physical tables and mention the type of join to be used. when this approach should be used.
--Whenever you need to take the joins with the physical layer tables along with the logical table that is hit, we add the physical tables that is joined in the physical layer and make inner or other joins accordingly. Default the tick will be there, but when you are overriding the physical layer joins of the tables in the content tab 'where clause' then you need to remove the tick and allow it to take the joins/conditions specified in the 'where clause'.
2.We can also mention the type of join between the 2 logical tables while defining a join between 2 logical tables. when this should be used.
--These joins tells the OBI server to make the optimum joins while requesting for the request and tells about the cardinalities to join.
Hope this solves your problems
Regards
MuRam

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