What is parallel machines in database mangement system?

Question

http://en.wikipedia.org/wiki/Relational_database_management_system

There are Database Backup and restore utilities for RDBMS Systems.
The Backup program generates a (.Bak) Binary File as output which can later be restored in case the Database crashes.

What could be the Algorithm/s in database backup/s and restore programs ?. i.e. C/C++ Programming logic/Algorithm.

Answer 1

It is a parallel machine architecture in which parallelism is achieved by connecting more number of simple processors. Such a system is used for parallelizing and executing a single query in parallel (in case of Intraquery Parallelism). Typically, scientific queries or more complex queries are executed this way.