Automatic detection of provider-side unique and not-null constraints implemented for postgres, spatialite, ogr provider
Client side unique and not-null constraints can be set within QGIS.
Unique constraints are enforced in attribute form
This feature was funded by OpenGIS.ch
This feature was developed by Nyall Dawson (North Road)
This application was created by Kartoza (Pty) Ltd. Available on GitHub! Version: 2.3.1