Accounting information system is essentially an integration of the various transaction processing systems Further accounting information system can be defined as a collection or integration of sub-systems / components that are interconnected and cooperate with each other in harmony to process financial data into accounting information Accounting information system is a system that collects, record, store, and process data to generate accounting information for decision makers (An accounting information system is a system that collects, records, stores, and processes the data to produce information for decision makers)