OLAP(Online application program) system is market oriented and is used for data analysis by knowledge workers including Managers, Executives and Analysts.
OLTP (online transaction processing) is a class of software programs capable of supporting transaction-oriented applications on the Internet.
Data system is a term used to refer to an organized collection of symbols and processes that may be used to operate on such symbols
A market system is the network of buyers, sellers and other actors that come together to trade in a given product or service