Storing data in multi-cloud concepts

If you ask a chief information officer (CIO) what the most important asset of the business is, the answer will be very likely be data. The data architecture is therefore a critical part of the entire business and IT architecture. It's probably also the hardest part in business architecture. In this section, we will briefly discuss the generic principles of data architecture and how this drives data security in the cloud.

Data architecture consists of three layers – or data architecture processes – in enterprise architecture:

• Conceptual: A conceptual model describes the relation between business entities. Both products and customers can be entities. A conceptual model connects these two entities: there's a relationship between a product and the customer. That relationship can be a sale: the business selling a product to a customer. Conceptual data models describe the dependencies between business processes and the entities that...