Which statement is true about defining more than one physical schema associated to the same data server? (Choose the best answer.)
ODI topology does not allow defining more than one physical schema for a data server; the associated logical schema would be ambiguous.
It is possible to define more than one physical schema associated to the same data server, but it is mandatory to specify a different user to log in.
It is possible to define more than one physical schema associated to the same data server, but you must flag the default physical schema.
It is possible but it is better to avoid doing so because it is more difficult to define a logical schema this way.
(http://odiexperts.com/context-logical-and-physical-schema-how-does-it-work/)
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