Compaq COBOL AAQ2G1FTK - Manual (Page 15)

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 Records and 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 (Tru64 UNIX) . . . . . . . . . . . . . . . . . . . 6–16
6–11 Using Environment Variables for 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
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