Rick van der Lans is data virtualization's leading independent analyst.  So when he writes a new white paper, any enterprise that is struggling to connect all their data (which is pretty much every enterprise), would be wise to check it out.

Rick's latest isData Vault and Data Virtualization: Double Agility. In a nutshell, the paper addresses how enterprises can craftily combine the Data Vault approach to modeling enterprise data warehouses with the data virtualization approach for connecting and delivering data.  The result is what Rick calls double agility as each approach accelerates time to solution in complex data environments.

Data Vault Pros and Cons

Adding new data sources such as big data and cloud to an existing data warehouses is difficult. The Data Vault approach provides the extensibility required.  This is the first agility.

Unfortunately, from a query and reporting point of view developing reports straight for a Data Vault