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Difference between REDEFINES and RENAMES

 
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ensameer

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Joined: 15 Mar 2005
Posts: 4
Location: Chennai

PostPosted: Wed Mar 16, 2005 2:51 pm    Post subject: Difference between REDEFINES and RENAMES
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Hi friends,
Can u plz explain the difference in using RENAMES and REDEFINES with example.
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narena

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Joined: 16 Mar 2005
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PostPosted: Wed Mar 16, 2005 3:12 pm    Post subject: Redefines & Renames
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Renames clause will be used to regrouping of elementary data items

Redefines clause will points to same memory area with different names.
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muthukumarapandian

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Joined: 08 Oct 2004
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PostPosted: Wed Mar 16, 2005 7:14 pm    Post subject:
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Hi ,

renames clause is used for display the same data in different name , this one also shares the same memory just like ur redefines.
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rick

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Joined: 18 Jun 2004
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PostPosted: Wed Mar 16, 2005 7:45 pm    Post subject:
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Hi Sameer,

Dont get confused ? Renames clause is re-grouping of the already existing structure. It is used when u need to use a already existing structure. So different memory are allocated for both.

In case of Redefine clause it uses the already existing memory. So there is no seperate memory allocated for redefined item.
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kanak

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Joined: 12 Mar 2005
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PostPosted: Sat Mar 19, 2005 6:19 pm    Post subject:
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hi,
Rename clause allocates different memory where as redefines just the same memeory. For element to be rename it must be decalred in 66 level whereas for redefining both should be defined in 01 level.Redefines points to the same memory location with different name. like if variable is redefined with variable2 then if you move any data to varibale then same will reflected in variable2(if they same contains same memory area).You can directly see how redefines works, just create one flat file and the record layout is one include and in that include redifined then in file aid just try to change one value see the redefined variable value also get updated.
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kanak

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Joined: 12 Mar 2005
Posts: 252
Location: India

PostPosted: Sat Mar 19, 2005 6:47 pm    Post subject: mistake in above reply
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sorry to say what i said before as rename doesn't allocates different memory but it rearranges differenet elementy item with new name.
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