I see that there are junction tables in DBMS (http://en.wikipedia.org/wiki/Junction_table) but i need to know if generaly the relationships between tables can be shown as tables themselves. If this is true how can i distinguish between the entity tables and the relationship tables.

As far as I know, Junction Table is only a concept. It's the functionality of the table, it's the purpose of the table.
But it's a normal table, with fields, relationships and primary keys if needed.
I don't know any DB Manager that display Junction Tables as any thing different than a table.

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