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IBM Data and AI Ideas Portal for Customers

This portal is to open public enhancement requests against products and services offered by the IBM Data & AI organization. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (

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Status Not under consideration
Workspace Watson Studio
Created by Guest
Created on Jul 1, 2020

allow OPL CPLEX models to use data not only in .csv but also in .dat

In the CPLEX IDE on prem, OPL CPLEX models use .dat file to store data

In WML OPL CPLEX models work fine with data in .dat, .csv and .json

Allowing .dat files in Watson Studio for OPL CPLEX models would make the move from CPLEX on prem to either Watson Studio Cloud or Cloud Pak for Data / Watson Studio Premium much easier

Needed by Date Sep 18, 2020
  • Guest
    Mar 11, 2021

    This is a very critical concern. In fact, this limitation really blocks the transition to WML from OPL IDE. There are related concerns:

    (1) [2021-03-10T23:03:38Z, INFO] Element 'DataK' provided in CSV data source cannot be mapped to OPL type: 'ARRAY' as this type is not supported for input data on the Cloud.

    tuple t_Travel {
    key int b1; key int b2; int d;
    }; {t_Travel} DataK[Mchs];

    (2) [2021-03-10T23:03:38Z, SEVERE] expecting a collection and found an integer/float
    tuple t_Mx {
    key int job;
    {int} mch;
    }; {t_Mx}