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Questions And Answers for PowerBuilder Interviews

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Question: #31 of #131

Section: DataWindow

Version: 5.0 or later

Question

You have defined a composite DataWindow 'd_master' which has two DataWindows 'd_emp_info', 'd_emp_paychecks'. 'd_emp_info' takes one argument and 'd_emp_paychecks' takes two arguments. 'd_master' is placed in 'DataWindow_1' DataWindow control. DataWindow_1.Retrieve( Arg1, Arg2, Arg3 ) will retrieve data without prompting. Do you agree? Explain.

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Answer

PowerBuilder prompts for the retrieval arguments. This is because, you can't specify retrieval arguments in the Retrieve() function for the nested DataWindows. Instead, you need to set Nested_Arguments attribute using the Modify() function or .Object notation.

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