The term 'Revision Data' refers to what?

'Revision Data' specifically refers to data that has been overwritten. In the context of systems like AVEVA Historian, this term is used to describe how historical data is managed. When new data is collected, it can sometimes overwrite existing data points to ensure that the most accurate and up-to-date information is stored. This is particularly important in scenarios where storage capacity is limited or where only the most recent values of certain parameters need to be retained.

Understanding 'Revision Data' is crucial for effective data management and analysis; it allows users to grasp how their historical data is changing over time and the implications of these changes. Overwritten data may still have relevance for certain analyses or audits, and recognizing this helps in developing strategies for data recovery or backup.