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12/27/2014 7:40 PM
 

What's the difference between OPC and SQL?

 
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1/6/2015 7:38 AM
 

As a quick answer: 

OPC is generally used to bring information from field devices such as PLCs and instruments.  It allows SCADA and HMI packages to be able to connect to a variety of different devices.

SQL is a language (Standard Query Language) used when working with databases.  It has standard commands that generally work across different database platforms.

 
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2/19/2018 6:26 AM
 

SQL-- It is basically a computer language that helps a user to access, manipulate and retrieve information from a database. SQL basically acts as the prompter to a DBMS, i.e. database management software. A database is nothing but a collection of data in form of text, tables, indexes, diagrams, etc.  Programmers make use of various SQL commands and syntax, to alter, add, or delete information from an existing data.

OPL--OPL (Optimization Programming Language) A brief definition of OPL as a programming language to express optimization problems. itis a modeling language for combinatorial optimization, designed to substantially simplify optimization problems.


 
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