Although these works may be meaningful and their scores (mostly jazz) enjoyable even in excerpt form, the disc as a whole can't avoid seeming somewhat aimless, disjointed, and unplanned after the cumulative, canny theatrical power of the complete Revelations.
Typically, a data warehouse is housed on an enterprise mainframe server or increasingly, in the cloud. Data from various online transaction processing (OLTP) applications and other sources is selectively extracted for use by analytical applications and user queries.
Database programs create files of information. Compilers read source files and generate executable files. A file itself is a bunch of bytes stored on some storage device like tape, magnetic disk, Optical disk etc. The data files are the files that store data pertaining to a specific application, for later use.