IBM AS/400 Manual de usuario descargar pdf (Pagina 329)

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101

Valid File Operations

Table 20. Valid File Operations for Keyed Processing Methods (Random by Key,

Sequential by Key, Sequential within Limits)

File-Description

Specifications Positions

Calculation Specifications Positions

17 18 20 28

26-35

I P/S K/A/P/G/

D/T/Z/F

CLOSE, FEOD, FORCE

I P/S A K/A/P/G/

D/T/Z/F

WRITE, CLOSE, FEOD, FORCE

I P/S L K/A/P/G/

D/T/Z/F

CLOSE, FEOD, FORCE

U P/S K/A/P/G/

D/T/Z/F

UPDATE, DELETE, CLOSE, FEOD,

FORCE

U P/S A K/A/P/G/

D/T/Z/F

UPDATE, DELETE, WRITE, CLOSE,

FEOD, FORCE

U P/S L K/A/P/G/

D/T/Z/F

UPDATE, DELETE, CLOSE, FEOD,

FORCE

I F K/A/P/G/

D/T/Z/F

READ, READE, READPE, READP,

SETLL, SETGT, CHAIN, OPEN, CLOSE,

FEOD

I F A K/A/P/G/

D/T/Z/F

WRITE, READ, READPE, READE,

READP, SETLL, SETGT, CHAIN, OPEN,

CLOSE, FEOD

I F L K/A/P/G/

D/T/Z/F

READ, OPEN, CLOSE, FEOD

U F K/A/P/G/

D/T/Z/F

READ, READE, READPE, READP,

SETLL, SETGT, CHAIN, UPDATE,

DELETE, OPEN, CLOSE, FEOD

U F A K/A/P/G/

D/T/Z/F

WRITE, UPDATE, DELETE, READ,

READE, READPE, READP, SETLL,

SETGT, CHAIN, OPEN, CLOSE, FEOD

U F L K/A/P/G/

D/T/Z/F

READ, UPDATE, DELETE, OPEN,

CLOSE, FEOD

O Blank A K/A/P/G/

D/T/Z/F

WRITE (add new records to a file),

OPEN, CLOSE, FEOD

O Blank K/A/P/G/

D/T/Z/F

WRITE (initial load of a new file)

, OPEN,

CLOSE, FEOD

Notes:

1. An L must be specified in position 28 to specify sequential-within-limits processing by

a record-address file for an input or an update file.

2. Externally described files require a K in position 34; program-described files require

an A,P,G,D,T,Z, or F in position 34 and an I in position 35.

3. An A in position 20 is not required for the initial loading of records into a new file. If A

is specified in position 20, ADD must be specified on the output specifications. The

file must have been created with the OS/400 CREATE FILE command.

Chapter 16. Accessing Database Files 305

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