[IPT] How to add his own/custom extension

Hi,

I use Dwc-A to feed my BD.

We know the limits of the Dwc star schema to represent a relationnal database.

For example in the case of 1-n cardinality : specimen --- event/record --- location. If i understand the concept, I need to use the Darwin *Core* *Occurrence* *extension*, denormalize my relational model in a big raw model and transform / re-normalize this model to match with my DB model.

In order to reduce cost*, *dev and optimize sql statement, it will be grandly appreciate to add custom extension. In this case, i can to be very close of my relational database model and avoid multiple step of dev.

I discovered this link but explanantion is now deprecated http://dag-endresen.blogspot.fr/2009/06/adding-extension-for-germplasm-to-gb...

Thanks,

J.