What differentiates QD from a traditional RDBMS?
• Network independence. Users can work on the QD without being connected to the main database server, or to any other external computer or network at all. Therefore, they can query their database while on an airplane or in a secure site where outside network access is prohibited. • A subscription service which provides users with a data feed (and email notification), whenever the QD is ready to provide a download. • A SQL engine that is optimized for query performance. Because QD is read-only, query execution is not encumbered by overhead or data structural inefficiencies owing to the need to be able to perform database inserts or updates. • Simple architecture. Because QD is read only, no complex infrastructure is required for transactional processing, locking, or updates. QD is a tight, compact solution. • Portability. The decompression algorithm travels with the table itself. If new decompression algorithms are brought into QD, all of the old tables can still be read. • Flexibility.
