In any organization, it is very important that each and every transactions of the day to day business of the organization are recorded accurately, properly and in a timely manner. The information specifically developed to meet this need of the organization is called as a Transaction Processing System.
The information stored on this system is the base source of information for other information systems like Executive Information System and Management Information System. No TPS would typically mean No EIS and MIS.
TPS demands detailed information from its users. And these users are mostly the lower level management of an entity.