Patent ID: 7917607

Claim:
A method for upgrading a first tenant of a plurality of tenants in a provider-tenant system where a provider communicates with the plurality of tenants over a network, the provider-tenant system including an original provider database, an original tenant database, and an original tenant template generated based on the original provider database, the method comprising: receiving a patch; copying the original provider database to generate a clone provider database; applying the patch to the clone provider database to generate a new provider database; generating a new tenant template based on the new provider database; comparing the original tenant template and the new tenant template to determine a difference between the original tenant template and the new tenant template; generating a delta upgrade based on the difference between the original tenant template and the new tenant template; copying the original tenant database to generate a clone tenant database; and applying, using a processor, the delta upgrade to the clone tenant database to generate a new tenant database.