What type of IT system is most suitable for managing business operations through transaction records?

The Transaction Processing System (TPS) is the most suitable choice for managing business operations through transaction records because its primary function is to handle and process vast amounts of business transactions efficiently. TPS is designed to capture, store, and manage data resulting from various transactions in a business environment, such as sales, purchases, and inventory changes.

This system ensures that all transaction data is accurately recorded in real-time, which is crucial for maintaining accurate accounting records and operational efficiency. It also provides outputs that can help in generating reports and documentation necessary for further analysis or operational decision-making.

Other systems mentioned serve distinct functions. The Management Information System (MIS) provides reports and tools for managerial decision-making but is more about summarizing and reporting data rather than processing individual transactions. Expert Systems (ES) are designed to simulate human decision-making skills in specific domains and are not aimed at transaction processing. Decision Support Systems (DSS) assist in making decisions based on data analysis and are more focused on providing support for planning and problem-solving than on managing routine transactions.