Final answer:
Transaction processing systems, management information systems, and executive support systems are typically major sources of data for other systems.
Step-by-step explanation:
The systems that are typically a major source of data for other systems are transaction processing systems, management information systems, and executive support systems.
Transaction processing systems (TPS) are computerized systems that support the day-to-day operations of an organization. They collect and process large volumes of data generated by routine business transactions, such as sales, inventory, and payroll.
Management information systems (MIS) provide managers with the information they need to make decisions. They aggregate data from various sources, including TPS, and present it in a format that is useful for decision-making.
Executive support systems (ESS) are designed to assist top-level executives in making strategic decisions. They provide easy access to relevant data from different systems and help executives analyze the information to support their decision-making process.