Early Industrial Internet applications often function in a standalone fashion within manufacturing sites. The devices produce what is commonly called time-series data. Time-series data arrives at its destination as a sequence of data points in a specific time order and typically at equally spaced points in time. So, the data has a natural temporal order to it.
Specialty applications and transient data stores, called historians, were developed to speed time series analysis and became popular in process manufacturing. Two of the more popular applications in these implementations are PI server (that processes the data and is often linked to relational databases to store retired data in archives) and GE Digital's Historian (that can now also be deployed to Hadoop). Sometimes, the archives are stored locally in the manufacturing...
