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Appendix G
Appendix G
Appendix G
Appendix G
Appendix G
Appendix G
Appendix G
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Appendix G

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  • 1. Appendix DIAGRAMS G SYS-ED/ Computer Education Techniques, Inc.
  • 2. DB2 UDB Diagrams Relational terminology Term Approximate meaning relation table DBA-50 tuple record, row in a table attribute field, column in a table domain set of permitted values for a column cardinality number of rows in a table degree number of columns in each row Copyright Oakwood Computing Ltd. – North America Distribution Rights - Computer Education Techniques, Inc. SYS-ED/COMPUTER EDUCATION TECHNIQUES, INC. (700 DB2 UDB - 4.2) App G: Page 1
  • 3. DB2 UDB Diagrams SQL (Structured Query Language) * for processing tables * what is required (not how to get it) * independent of physical methods * non-procedural language * runs under TSO, CICS, IMS/DC DBB-10 * accessed from COBOL, PL/1, Assembler, C, etc Accessing DB2 address spaces DBM1 IMS MSTR batch TSO CICS IRLM TSO DIST etc DB2 internet system (e.g. S05) DB2 data internet SPUFI DBB-20 Copyright Oakwood Computing Ltd. – North America Distribution Rights - Computer Education Techniques, Inc. SYS-ED/COMPUTER EDUCATION TECHNIQUES, INC. (700 DB2 UDB - 4.2) App G: Page 2
  • 4. DB2 UDB Diagrams Partitioned Tablespace For large tables Can be processed separately Parallel processing option Index control key ranges DBB-53 Tables * store data * rows and columns (max 750) * manipulated by SQL * maximum size 64 GB (V4) 1024 GB (V5) 16 TB (V6) * space provided by DB2 DBB-60 * index(es) for improved access Copyright Oakwood Computing Ltd. – North America Distribution Rights - Computer Education Techniques, Inc. SYS-ED/COMPUTER EDUCATION TECHNIQUES, INC. (700 DB2 UDB - 4.2) App G: Page 3
  • 5. DB2 UDB Diagrams TS Index * faster access to a column table * based on one or more columns * can be unique * ascending or descending sequence * CREATE INDEX ... * reserves own space index DBB-80 program results table host variables DB2 table DBR-20 Host variables contain data from one row Copyright Oakwood Computing Ltd. – North America Distribution Rights - Computer Education Techniques, Inc. SYS-ED/COMPUTER EDUCATION TECHNIQUES, INC. (700 DB2 UDB - 4.2) App G: Page 4
  • 6. DB2 UDB Diagrams SYSTSIN DB2 control modules PGM=IKJEFT01 COBOL program SYSTSPRT tables DBQ-10 Running batch DB2 programs Accessing DB2 data ID Privilege Plan & package Ownership e.g. GRANT execution data DBD-10 Copyright Oakwood Computing Ltd. – North America Distribution Rights - Computer Education Techniques, Inc. SYS-ED/COMPUTER EDUCATION TECHNIQUES, INC. (700 DB2 UDB - 4.2) App G: Page 5
  • 7. DB2 UDB Diagrams Bind Isolation options CS cursor stability RR repeatable read RS read stability UR unreliable read DBK-20 Copyright Oakwood Computing Ltd. – North America Distribution Rights - Computer Education Techniques, Inc. SYS-ED/COMPUTER EDUCATION TECHNIQUES, INC. (700 DB2 UDB - 4.2) App G: Page 6

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