The data warehouse that Ron, who is currently using system software to connect to different types of data stores, but is not investing in dedicated hardware is C. virtual.
A virtual data warehouse includes a set of separate databases. These separate databases can be queried together, enabling Ron to effectively access all the data as if it was stored in one data warehouse.
A virtual data warehouse is not like a distributed, LAN-based, multistage, or stationary data warehouse.
In the case of a distributed data warehouse, there is a conglomeration of separate components connected via a network.
Thus, the data warehouse that Ron, who is currently using system software to connect to different types of data stores, but is not investing in dedicated hardware is C. virtual.
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