There are many different systems available for storing and analyzing manufacturing process data. A historian is a database application that provides a means of storing the data. Nowadays, historians are a commodity and sites routinely have multiple sources of data – everything from embedded historians in control systems to custom databases for specific purposes. The true value is in how the data is used, not where it is stored.
We have all heard the adage “a picture is worth a thousand words,” so it should be obvious that visual representations of data make analysis easier and faster. The simple example below illustrates the advantage of visual data over numerical data.