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    Working with Datapools


    A D V E R T I S E M E N T



    Home »rational-robot » Datapool Limits

    Datapool Limits


    A datapool can have up to 150 columns if the Rational Test software automatically generates the data for the datapool, or 32,768 columns if you import the datapool from a database or other source. Also, a datapool can have up to 2,147,483,647 rows.

    What Kinds of Problems Does a Datapool Solve?

    If you play back a script just once during a test run, that script probably does not need to access a datapool.

    But often during a test run, and especially during performance testing, you need to run the same script multiple times -- for example:

    1. During performance testing, you will probably want to run multiple instances of a script, so that the script is executed many times simultaneously. (Remember, a virtual tester is one runtime instance of a script.)
    2. During functional and performance testing, you will often want to run multiple iterations of a script, so that the script is executed many times consecutively (simulating a virtual tester performing the same task over and over).

    If the values used in each script instance and each script iteration are the same literal values -- the values you provided during recording -- you might encounter problems at test runtime.

    Here are some examples of problems that datapools solve

    Problem: During recording, you create a personnel file for a new employee, using the employee's unique social security number. Each time the script is played back, there is an attempt to create the same personnel file and supply the same social security number. The application rejects the duplicate requests.

    Solution: Use a datapool to send different employee data, including unique social security numbers, to the server each time the script is played back.

    Problem: You delete a record during recording. During playback, each instance and iteration of the script attempts to delete the same record, and "Record Not Found" errors result.

    Solution: Use a datapool to reference a different record in the deletion request each time the script is played back.



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