Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 247)

Chapter 7
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Data Streams
A data stream is any set of data that you can visualize (page 103). This
data includes, and is not limited to, FactoryTalk Historian tags, AF
attributes, data sets, and ODBC queries.
About FactoryTalk Historian Data
retrieves and helps you visualize data from your FactoryTalk Historian
System infrastructure and other systems that support different business
functions and provide access to diverse information.
You will likely work with FactoryTalk Historian data stored in:
 FactoryTalk Historian server
 AF Server
You will typically use these items to specify the information you want to
see:
FactoryTalk
Historian
points/tags
A FactoryTalk Historian point is a stream of real-time data from a
defined source, and is described by a corresponding tag name and
other attributes. FactoryTalk Historian points are frequently referred
to as FactoryTalk Historian tags, and the terms are used somewhat
interchangeably. However, a tag is simply a name for a FactoryTalk
Historian point. When you retrieve FactoryTalk Historian data into a
dynamic symbol, the tag name is the most commonly-used
FactoryTalk Historian attribute to refer to data from a FactoryTalk
Historian point.