Thanks Florian for your response. While it is possible to expose multiple tables/view in a single OData service definition, my question is more of how to retrieve data from all these tables in a single web service call.
To be more specific:
e.g.
service {
"SYSTEM"."TABLE_A"as"TAB_A";
"SYSTEM"."TABLE_B"as"TAB_B";
}
When the service is called, it would end in either TAB_A or TAB_B (and hence capture data from either of the 2 tables). The question is how to get data from BOTH the tables with ONE service call?