Using multiple LTS

Hi All,
I have a few conceptual questions. I have found that I can use 2 dimension from physical layer in one logical table using two LTS or by just using one LTS. If i drag and drop the fields from physical table into logical table, new LTS is created. When, I drag and drop the field in the existing LTS, there will be one LTS for two physical tables.
I would like to know the differences between these approach and which one is the best approach to follow.
Thanks,
Surya

Approach is depends on your desig.
The best approach is logical table having 2 LTS(when you expand source folder you see all sources), in this case BI uses its intelligence to pick the source based on your column selection in answers.
ex: Fact and Aggregate tables
Other case you are forcing BI to use that particular join(or source), irrespective of the column selection of the table.
ex: Fact and fact extension
Pls mark correct :)

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http://gerardnico.com/wiki/dat/obiee/measure_level_based
http://oraclebizint.wordpress.com/2007/12/03/oracle-bi-ee-101332-level-based-measures-lbms/
Assign points if found helpful.

Regarding LT and multiple LTS

Hi Experts,
What is the difference between logical table and logical table source in BMM layer in which scenarios we have to add multiple LTS to the logical table in BMM layer can any one make me clear regarding this.
Thanks in Advance
Edited by: Rafi.BI on Jan 16, 2013 10:40 PM
Edited by: Rafi.BI on Jan 16, 2013 10:41 PM

Hi rafi.
LTS - Means Logical table Source.
For each Logical table created in BMM Layer, there will be 1 or more Source tables coming from Physical Layer.
Many of the cases there will be 1 physical table for 1 logical table in BMM layer. But there will be a scenario where you will have to recieve the date from different physical table ( that is diiferent department will provide different physical table).
In this scenario you will be having 2 physical source table ( Multiple Logical table ) in your BMM layer.
Simailarly M LTS can be used for many other perposes. ex to eleiminate snowflake etc etc.
mark if correct/Helps
fiaz

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Using multiple LTS

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