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Contains a thorough coverage of the Job Control Language and the Access Methods of System 360/370. In fact it is the only text in the field to consider the System 360/370 Access Methods---BDAM, BPAM, BSAM, BISAM, QSAM and QISAM---in detail. There is a logical consistency in the organization of the text, starting with the Job Control Language repertoire and then the Access Methods concepts. A special section, the System Notebook, provides valuable information about computer science topics and introduces students to some very useful IBM utility programs. COBOL and PL/I Appendces relate specific high-level routines to the associated Assembler Language routines.

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CONTENTS
1 Introduction - The Operating System = 1
 1.1 Job Management Routines = 2
 1.2 The Reader／Interpreter = 3
 1.3 MVT and MFT = 4
 1.4 The Initiator／Terminator = 8
 1.5 The Output Writer = 10
 1.6 Task and Recovery Management = 12
 1.7 Data Management Routines = 13
 1.8 The Utility Programs = 15
 1.9 The Linkage Editor = 17
 The System Notebook
  Topic 1 Blocking and Buffering = 18
2 An Introduction to the Data Sets = 22
 2.1 The DCB Macro Introduction = 22
 2.2 Some Data Management Macro = 29
 2.3 Three QSAM Data Sets = 33
 The System Notebook
  Topic 1 The Various Modes of Get and Put = 34
3 JCL and the Procedure Library = 40
 3.1 The Job Control Language Cards = 40
 3.2 The JCL Card Format = 42
 3.3 The Cataloged Procedures = 47
 The System Notebook
  Topic 1 The IEBPTPCH Utility = 51
  Topic 2 Introduction to Disk Pack Storage = 54
4 The Job Statement = 58
 4.1 The Format of the Job Statement = 58
 4.2 The Positional Parameters = 59
 4.3 The Keyword Parameters = 60
 The System Notebook
  Topic 1 The Volume Table of Contents = 63
  Topic 2 The IEHLIST Utility = 68
  Topic 3 The IHADCB Dummy Control Section = 70
5 The EXEC Statement = 76
 5.1 The EXEC Card Format = 76
 5.2 The ACCT and DPRTY Parameters = 78
 5.3 The PARM Keyword = 80
 5.4 Retrieving a PARM Value = 82
 5.5 The COND Keyword Parameter = 84
 5.6 COND on the JOB Card = 87
 5.7 Returning a Completion Code = 88
 5.8 TIME, ROLL, and REGION = 90
 5.9 RD and RESTART = 94
 5.10 The JOBLIB and STEPLIB DD Card = 98
 The System Notebook
  Topic 1 A Partitioned Data Set - An Introduction = 102
  Topic 2 The Partitioned Data Set (Ⅱ) = 104
6 The DD Statement (Ⅰ) = 108
 6.1 The DD Card Format = 108
 6.2 The Positional Parameters = 109
 6.3 Data Set Location (Ⅰ) UNIT = 113
 6.4 Data Set Location (Ⅱ) SYSOUT = 118
 6.5 Data Set Location (Ⅲ) VOLUME = 119
 6.6 Data Set Location (Ⅳ) AFF, SEP = 123
7 The DD Statement (Ⅱ) = 125
 7.1 Data Set Status - DISP = 125
 7.2 Data Set Attributes - DCB = 130
 7.3 Data Set Information (Ⅰ) DSNAME = 134
 7.4 Data Set Information (Ⅱ) DDNAME = 138
 7.5 Data Set Size (Ⅰ) SPACE = 139
 7.6 Data Set Size (Ⅱ) SPLIT = 143
 7.7 Data Set Size (Ⅲ) SUBALLOC = 145
 The System Notebook
  Topic 1 Some Special DD Cards = 147
8 Cataloged and Instream Procedures = 150
 8.1 An Instream Procedures = 150
 8.2 How to Catalog a Procedure = 152
 8.3 Modifying an Invoked Cataloged Procedure = 153
 8.4 Concentration of Data Sets = 157
 8.5 Symbolic Parameters = 158
9 The Access Methods (Ⅰ) QSAM = 161
 9.1 Extending a Sequential Data Set = 161
 9.2 Processing a PDS with QSAM = 164
 9.3 The PUTX Macro = 169
10 The Access Methods (Ⅱ) BSAM = 173
 10.1 Processing with BSAM = 173
 10.2 Processing Short Blocks with BSAM = 175
 10.3 BSAM Retrieves a Short Block = 178
 10.4 Automatic Buffering -GETBUF = 181
 10.5 BUILD and GETPOOL = 185
11 The Access Methods (Ⅲ) QISAM, BISAM = 191
 11.1 The Structure of an Indexed Sequential Data Set = 191
 11.2 The Organization of an Indexed Sequential Data Set = 195
 11.3 The Load Mode = 198
 11.4 Direct Retrieval = 203
 11.5 Direct Insertion = 206
 11.6 Sequential Retrieval, the SETL Macro = 209
 11.7 JCL for Indexed Sequential Data Sets = 215
 The System Notebook
  Topic 1 The SYNAD DCB Keyword = 218
12 The Access Methods BPAM (Ⅳ) = 223
 12.1 The Structure of a Partitioned Data Set = 223
 12.2 The STOW Macro = 226
 12.3 The BLDL Macro = 233
 12.4 The FIND Macro = 235
13 An Introduction to BDAM = 242
 13.1 Relative Block Addressing = 244
 13.2 The ADD and SORT Routines = 246
 13.3 Direct Retrieval = 252
 13.4 Direct Update = 256
14 A Generation Index and Model DSCB = 262
 14.1 The Generation Index and Model DSCB = 262
 14.2 The First Generation = 264
 14.3 The Baseball Program = 268
 14.4 Creating a New Generation = 270
 14.5 Generation Data Group Retrieval = 271
Glossary = 277
COBOL Appendix = 290
PL／I Appendix = 310
 Appendix A A List DCB Keywords = 322
 Appendix B Ansi Printer Carriage Control Character = 324
 Appendix C Some Data Management Macros = 325
 Appendix D The Macros Local to this text = 326
 Appendix E Some Random Access Storage Systems = 329
 Appendix F The EBCDIC Clollating Sequence = 330
 Appendix G Some Linkage Editor PARM Options = 332
 Appendix H Some Linkage Editor Control Statements = 333
 Appendix I Some System Data Sets = 335
Index = 336