Re: Many to many link tables with history? - Mailing list pgsql-sql

On 2013-10-08 Tue 18:04 PM |, Craig R. Skinner wrote:
> Hi folks, I'm new here. I hope this is the correct list....
>
> While creating a database of customer subscribed services with
> DNS domains, I want to:
> *) enable customers to subscribe to multiple services
> *) each service can have multiple domain names per customer
> *) a domain name must be unique per customer per timestamp
>

Probably (!!) solved by using a tstzrange exclusion constraint:
http://dba.stackexchange.com/questions/51280/many-to-many-link-tables-with-history

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