OPC HDA

== English == === Proper noun === OPC HDA (communication, programming) Initialism of OPC Historical Data Access, a group of standards of the OPC Foundation that provides COM specifications for communicating data from devices, like databases, and applications that provide historical data. ==== Hypernyms ==== OPC ==== Related terms ==== OPC DA === References === OPC HDA on Wikipedia.Wikipedia === Anagrams === DPOAHC