In separtaion Model ....Is there any way we can show anothers file's layout in UI files tab control where each tab shows different file from different external file source ??????
Data from tables, yes, layouts from another file, no.
But you can copy and paste the layouts into a layout in your UI file pretty easily so long as the Layout's table occurrence name and "schema" (List of field names and types) match that of the layout from which you are copying the layout. Sometimes you can use Manage | Database to rename a table occurrence, paste your layout objects and then return to Manage | Database to return the table occurrence name to the original text.
Retrieving data ...