Mnesia and uniqueness on two keys

Samuel Rivas <>
Wed Jul 13 13:22:40 CEST 2005

Joel Reymont wrote:
> How is uniqueness ensured then?
> Based on?
> On Jul 13, 2005, at 8:25 AM, Samuel Rivas wrote:
> >  The key is the first element of the record. The OID is the tuple  
> >with
> >the record name and the key.
 If the table is not a bag, when a tuple with an existing key is
inserted it replaces the old tuple. If the table is a bag then
duplicated keys are allowed.

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