How is a customer’s data isolated from the data of other customers?

The multi-tenant database is separated by unique keys. All customer data in our database is also scoped with an additional column in the database which contains a customer ID which is unique. This means that each data item in the database (e.g. incident, computer, mobile, change etc) is always scoped uniquely to a singular account. Each and every access to the application database must contain within it also this unique identifier.