In addition, with multiple drives, all the disks in a subgroup would already be loaded. A 14 inch WORM disk can hold up to 6.8 gigabytes of information. This medium could be very useful for archiving data. But, as with most media, tradeoffs must be made. But, if hundreds or even thousands of copies of the product can be used by end users the cost per unit decreases to a manageable amount very quickly.
Physical control is another problem of CD-ROM disks.
Obviously, disks can be misplaced. Evaluating a CD installation including the products to be used on the CD drives is a difficult one. Evaluating the database's integrity, thoroughness, reliability, etc., can be a complex undertaking. A number of products may be useful to accounting offices, such as national zip code directories, encyclopedias, city telephone directories, city business directories, etc. Information on publicly announced transactions involving a merger, acquisition, leveraged buy-out, divestiture, stock purchase, tender offer, self tender offer, share repurchase, or other major transactions.