Compaq AAQ2G1FTK

6–1 Sample Record Description . ................................ 6–9

6–2 Determining Fixed-Length Record Size . ....................... 6–10

6–3 Determining Fixed-Length Record Size for Files with Multiple Record

Descriptions ............................................. 6–10

6–4 Creating Variable-Length Records with the DEPENDING ON

Phrase . ................................................ 6–11

6–5 Creating Variable-Length Records with the RECORD VARYING

Phrase . ................................................ 6–11

6–6 Creating Variable-Length Recordsand Using the OCCURS Clause

with the DEPENDING ON Phrase ........................... 6–11

6–7 Deﬁning Fixed-Length Records with Multiple Record Descriptions . . . 6–12

6–8 Deﬁning a Disk File ....................................... 6–15

6–9 Deﬁning a Magnetic Tape File (OpenVMS) ..................... 6–16

6–10 Deﬁning a Magnetic Tape File (Tru64UNIX) ................... 6–16

6–11 Using Environment Variablesfor File Speciﬁcation ............... 6–19

6–12 Using Environment Variables ............................... 6–19

6–13 Specifying Sequential File Organization and Sequential Access Mode

for a Sequential File ...................................... 6–21

6–14 Specifying Relative File Organization and Random Access Mode for a

Relative File ............................................. 6–21

6–15 Specifying Indexed File Organization and Dynamic Access Mode for

an Indexed File . . ........................................ 6–21

6–16 Specifying Line Sequential File Organization with Sequential Access

Mode . . ................................................ 6–22

6–17 SELECT Statements for Sequential Files with Sequential Access

Mode . . ................................................ 6–23

6–18 SELECT Statements for Relative Files with Sequential and Dynamic

Access Modes ............................................ 6–23

6–19 SELECT Statements for Indexed Files with Dynamic and Default

Sequential Access Modes . . . ................................ 6–24

6–20 SELECT Statements for Line Sequential Files with Sequential Access

Modes . ................................................ 6–24

6–21 OPEN and CLOSE Statements .............................. 6–25

6–22 Creating a Sequential File . . ................................ 6–26

6–23 Creating a Line Sequential File .............................. 6–27

6–24 Creating a Relative File in Sequential Access Mode .............. 6–30

6–25 Creating a Relative File in Random Access Mode ................ 6–30

6–26 Creating and Populating an Indexed File ...................... 6–33

6–27 Using Segmented Keys .................................... 6–35

6–28 Reading a Sequential File .. ................................ 6–38

6–29 Reading a Relative File Sequentially . . . ....................... 6–39

6–30 Reading a Relative File Randomly............................ 6–40

6–31 Reading a Relative File Dynamically . . . ....................... 6–41

6–32 Reading an Indexed File Sequentially . . ....................... 6–42

6–33 Reading an Indexed File Randomly ........................... 6–43

6–34 Reading an Indexed File Dynamically . . ....................... 6–45

6–35 Reading an Indexed File Dynamically,with READ PRIOR . . ....... 6–46

6–36 Rewriting a Sequential File . ................................ 6–49