Add a new unique index to prevent sample points with the same name and site id

ethankale / Sedna

Water database. Evolution of King County's GData.

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Add a new unique index to prevent sample points with the same name and site id #104

Closed ethankale closed 3 years ago

ethankale commented 3 years ago

The true unique identifier of a sample point is the site that it's associated with and the name of the sample point, so it shouldn't be possible to name two sample points for the same site with the same name.