	Name	Description
	Aggregates	Aggregates supported by this server.
	ItemAttributes	Item Attributes supported by this server.
	ItemHandles	This list contains all items that have been requested in client GetItemHandles() calls In some applications the list may be static, containing all items.
	ServerStatus	Current server status returned in GetHistorianStatus()
	ServerStatusString	Explains the server state OPCHDAServerStatus.Indeterminate

	Name	Description
	AnnotationCapabilities	Definition of the Annotation handling capabilities of this server implementation
	updateCapabilities	Definition of the update handling capabilities of this server implementation

	Name	Description
	DeleteAtTime	This method handles one synchronous or asynchronous client update::DeleteAtTime call. The request list may contain multipe timestamps for multiple items
	DeleteRaw	This method handles one synchronous or asynchronous client update::Delete request call. For one item the datapoint in the given time interval are deleted in the database.
	GetAnnotations	Database access helper method. Reads annotations from the database into a DataPointAnnotation array. At least one data point before and after the time range must be included in the returned array. The returned data has to be sorted for increasing timestamps. On error throw a HDAException with the error code that is to be rturned to the client.
	GetAttributeItemData	Reads the attributes from the database. At least one attribute before and after the time range must be included in the returned array, unless startTime is DateTime.MinValkue, indicating that only the newest value is to be returned. The returned data has to be sorted for increasing timestamps
	GetItemInfo	Returns the HDA item definition object for the handle.
	GetModifiedItemData	Reads all modified data points from the file into a DataPointModified array. At least one data point before and after the time range must be included in the returned array. This implementation returns all found points and lets the calling method in HDAPlugin.dll filter the unneeded points. The returned data has to be sorted for increasing timestamps. On error throw a HDAException with the error code that is to be rturned to the client.
	GetRawItemData	Reads the raw data points in the given time range from the database into a DataPoint array. At least one data point before and after the time range should be included in the returned array. This method needs NOT be thread safe. The returned data has to be sorted for increasing timestamps
	Insert	This method handles one synchronous or asynchronous client update::insert request call. It inserts the datapoints into the database. There may be multipe datapoints for multiple items
	InsertAnnotation	Insert an annotation into the database.
	InsertReplace	This method handles one synchronous or asynchronous client update::insertReplace request call. It inserts the datapoints into the database. There may be multipe datapoints for multiple items
	ProcessDatapoint	Calculates one processed data value.
	Replace	This method handles one synchronous or asynchronous client update::Replace request call. It inserts the datapoints into the database. There may be multipe datapoints for multiple items

Reference