DataListener Represents a listener that can receive time-series data in real-time using s.

 TimeTag Represents a historian time tag as number of seconds from the .

 TimeTagException Represents an exception related to instances.

 Quality Indicates the quality of time-series data.

 QualityExtensions Defines extension methods for (and related to) enumeration.

 IArchive Defines a repository where time-series data is warehoused by a historian.

 IDataPoint Defines time-series data warehoused by a historian.