I've created in ArcCatalog a Spatial Database Connection to an PostgreSQL database server. I've imported there all my data (from a local hard drive) and now I want to edit them. But apparently I cannot build a geometric network, neither a topology in my Feature Dataset.

The error message is like this: 

> 
> "Cannot create geometric network. The selected feature dataset does
>  not contain any feature classes which can participate in a new
>  geometric network"
> 
> 
> 

. 

This usually happens when you have either a topology or a geometric network, but I have neither. 

I use postgreSQL 8.3 /
ArcGIS 10.0 /
ArcSDE for PostgreSQL 10