An obsolete information system could be defined as one that has reached the end of theeconomic useful life and is due for replacement by another information system. Discussfour symptoms of a system which is approaching the end of its useful economic life.

Sure, I can answer your question. Here are four symptoms of a system that is approaching the end of its useful economic life:

1. Outdated Technology: One symptom of an obsolete information system is the use of outdated technology. This could include hardware, software, or both. For example, if the system is running on old servers or using software that is no longer supported or updated, it may indicate that the system is nearing the end of its useful life.

2. Inefficiency and Slow Performance: As an information system ages, it may become less efficient and slower in performance. This could be due to the system's inability to handle increasing data volumes or process complex tasks. Users may experience delays or system crashes, which can impact productivity and hinder business operations.

3. Lack of Integration and Compatibility: Another symptom of an obsolete system is the difficulty in integrating or compatibility with newer technologies or systems. As technology advances, new systems and applications may emerge that are not compatible with the outdated system. This can lead to data inconsistencies, manual workarounds, and limited functionality.

4. High Maintenance and Support Costs: As a system ages, the cost of maintaining and supporting it may increase significantly. This could be due to the scarcity of spare parts, the need for specialized expertise, or the reliance on outdated software licenses. High maintenance and support costs can strain the organization's budget and make it more cost-effective to replace the system with a newer, more efficient one.

These symptoms indicate that an information system is approaching the end of its useful economic life and should be replaced with a more modern and efficient system.