Re: HELP: I need a Equation Builder that works on the server, Does One Exist?

From: Paul Dorsey <>
Date: Mon, 24 May 1999 12:01:58 GMT
Message-ID: <Wcb23.2264$>

I suggest building your own. That's what we did. We copied (more or less) the way SAS did it. They have a VERY nice idea that is worth learning from. It depends on your application as to how it will be implemented. Ours is building PL/SQL packages customized for our app.

Paul Dorsey
Dulcian, Inc.
212 595 7223
Alex Apostolou wrote in message <>...

>We are building a system which requires the integration of a tool to
>advanced users and administrators in defining and maintaining their own
>equations to flexibly compute site environmental, health and safety data
>requirements. The tool must:
>* provide support for a mix of sampled data, user-defined variables and
>constants, and other equations.
>* provide support for time sensitive equations, variables and constants.
>* be able to compute results in real-time and when scheduled;
>Allow user to specify the following attributes of an equation:
>* Equation Name and Description;
>* Equation version (to support time sensitive validity);
>* User defined Variables;
>* User defined Constants (to support time sensitive validity);
>* Full range of arithmetic, statistical, scientific operators (need further
>* Inclusion of other equations;
>* Parentheses to support ordered resolution of single equations;
>* Ordering to support the evaluation for multi-component equations;
>* Allow copy and paste of existing equations;
>* On-demand or scheduled invocation;
>Ideally, the stored equations will reside as PL/SQL.
>Does such a tool exist?
>Thanks and regards
>Alex Apostolou
Received on Mon May 24 1999 - 14:01:58 CEST

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