What does a Logical File in AS/400 contain?

5 pts.
AS/400 administration
Logical Files
Does it contain data. If not then why do we need a member for alogical file?

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As taken from WIKIanswers.com

Logical file is a type of file that provides a view of the data stored into the Physical file. It does not contain data. A logical file contains only an index to the data stored into the physical file. we can also update the physical file thru logical file

The only reason you would need another member in a logical is if you physical file currently has multiple members. There is a 1 to 1 ratio of accsess path information vs. member.


Unless of course you use a single logical member to access multiple physical members.

A logical file is a view over physical data. It can present an alternate index, a subset of the fields in a physical file, reformatted data from the physical file, a view of the data from multiple files, &c.

The logical file member points to one or more physical file members (I can’t remember off-hand what the limit of physical file members per logical file member is).

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  • LBurkett99
    Files, both physical and logical, do not contain anything, neither data nor indexes. The data and indexes of a physical file, and the indexes of a logical file, are contained in the member(s) of the file. Leo Burkett
    850 pointsBadges:
  • Featured Member: LBurkett99 - ITKE Community Blog
    [...] What does a logical file in AS/400 contain? [...]
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  • Sivasankar1616
    What is CA02 in AS 400?
    10 pointsBadges:
  • TomLiotta
    What is CA02 in AS 400? If CA02 shows up in a logical file, it's probably going to be the name of a field in the file. But I don't think that is what you are asking about. Please provide more information. If this isn't about logical files, you should probably start a new question. Tom
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  • CharlieBrowne
    Regarding CA02 If you are talking about a DSPF it usually defines the F2 key. CAxx does not pass data back to the program CFxx does pass the data back.
    62,385 pointsBadges:

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