Answer / swetha p rao

Level Identifier is a value that is generated when you
compile a file.Each file wil have a unique identifier.

Answer / sunaina

I think we can have only one record format in a physical
file file then how the record level identifier can be two
for two members of a physical files. Could you please explain.

Answer / sree

There are3 level identifiers for any PF. They are

1. At File level
2. At Member level
3. At Record level

Say PF1 is having two members MBR1 and MBR2. So, There will
be 5 level identifiers. 1 for PF1, 1 for MBR1, 1 for MBR2
and 1 for RecordFormat(MBR1) and 1 for RecordFormat(MBR2).

When you made changes to RecordFormat of MBR1, then only
Level identifiers of RecordFormat(MBR1) and MBR1 will be
changed.

what is file identifier wher we can use

1 Answers   IBM,

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3. Given the DOS Specification below and the following information: • Indicator 50 is off • No records have been written to the subfile What will be the result if the EXFMT operation code is performed on the record format CTLR? A R SUBFL A DESCRIP 101 6 1ODSPATR(UL) A DFT(’NOT FOUND’) A R CTLR SFLCTL(SUBFL) A N50 SFLDSP A SFLDSPCTL A SFLINZ A 67 SFIJEND A SFLSIZ(13) A SFLPAG(12) A ACCOUNTNO 100 S 10 a.) Only AccountNo will display b.) SUBFL will be initialized with 13 blank records c.) An I/O exception error will occur d.) The screen will display 12 records with ‘NOT FOUND’

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can we use cl programming to update or delete physical files

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