Which three columns are required for an insert to be successful?

An insert in the context of the AVEVA Historian Server requires specific columns to facilitate the successful logging of data entries. The combination of Tagname, Value, and Datetime is critical because:

• Tagname: This column identifies the specific data point or variable that is being recorded. In a historian database, each tag represents a unique measurement or data stream. It allows the system to know what kind of data is being inserted and how to categorize it.

• Value: This column contains the actual data being recorded at the specified Datetime. It is essential because it represents the measurement or event that the Tagname is associated with, providing the substance of what is being logged.

• Datetime: This timestamp indicates when the data was collected. Having this information is vital for historical data analysis and enables users to understand the context and sequence of events. Without a proper timestamp, the data may lose its temporal significance.

By requiring these three specific columns, the system ensures that it has all necessary information to accurately record and retrieve each data point within the historian database. Other combinations may miss one or more critical elements, such as the identification of the data (Tagname) or the temporal context (Datetime), thus hindering the integrity