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What technology/features do we need to use in order to migrate existing web applications from other archive system

Question asked by bluefish on Mar 23, 2015
Latest reply on Apr 6, 2015 by bluefish

We have a list of customized web applications built on Wonderware historian database. Since we are moving most of PI tags/points from Wonderware historian to PI archive servers. How do we address migrations of those existing web applications? Assume those web applications get data through the following sources:

1) Get data directly from PI points

2) Get data through wonderware historian sql server database, stored procedures


For applications get data from item 1, what's the best way we need to utilize in PI? PI WebAPI, PI SDK? PI AF SDK?

For applications get data from item 2, what's simple and easy way for switching from wonderware historian to PI?