One department in our company still maintain their customer records and contacts in a spreadsheet document. They do lots of analysis and reporting on the data for their service. The data is also used for other purposes. There are numerous proper applications on the market which also offer the same functionality for their line of business but they seem adamant in keeping their trusty spreadsheet as their main 'system'. Can there be any risks limitations or shortfalls in using a spreadsheet almost as a proper system/database just so we can make them aware and consider they review whether a spreadsheet is the right tool for recording their data. It sounds an odd approach but need to ensure we have identifed the problems in their solution, if indeed there are any.