What type of data retrieval modes does Historian Server support?

The correct answer highlights the various modes of data retrieval that the AVEVA Historian Server supports, which are essential for analyzing and extracting information accurately based on specific requirements.

Historian Server provides a range of data retrieval options: Delta retrieval mode allows users to obtain changes or differences in data between consecutive records, which is useful for tracking specific variations over time. Best Fit mode ensures that the retrieved data closely reflects the actual trend by selecting the most suitable values based on the request criteria. The Counter mode retrieves data in a format suited for count-based metrics, allowing users to effectively analyze data that records occurrences over time. Lastly, Interpolated mode computes values between actual recorded data points, which can help in filling gaps and providing a continuous representation of trends.

Together, these modes offer a comprehensive set of options for users to tailor their data retrieval according to their analytical needs, making the AVEVA Historian Server a flexible and powerful tool for data analysis in various industrial applications.