Mainframe For Dummies

Impact Analysis : I hope Below informaiton will provid you brief information on various steps involved in impact analysis ( when ur asked to add a new field?) Impact Analysis : This is a process to identify the various Copy books or Programs of Jcls or DB2 table etc are to be modified/impacted due the new changes , to meet the requirement.As per the requirement, programmer will have an idea, like what are the New fields/Existing field to be added/modify in 1. Copy Books 2. Files/Jcl 3. Database 4. In online Screen etc. 1. Impact Analsys On Copy Books (used by cobol programs) : Identify the copybooks to be modified as part of requirement in list1 Now search for various copy books Impacted because of the copy books listed in list1 and note them into new list List2 Now search for various copy books Impacted because of the copy books listed in list2 and note them into new list List3 Above process is continued till the search returns zero copy books impacted. Merge all above lists and eli...

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