DB2 for z/OS Architecture in Nutshell
Download as PDF, PPTX12 likes4,629 views
The document presents a seminar on DB2 for z/OS held by Cüneyt Göksu, an expert with over 20 years in information management technologies. It covers the mainframe architecture, features of DB2 as a relational database management system, and discusses its capabilities like concurrency, security, and data sharing. The seminar highlights the importance of DB2 in maintaining mission-critical applications while supporting modern technology trends.
More Related Content
Similar to DB2 for z/OS Architecture in Nutshell(20)
DB2 for z/OS Architecture in Nutshell
- 1. CENG497 - DB2for z/OS Seminar – May 26th 2011 – Middle East Technical University, Ankara DB2 for z/OS Architecture in Nutshell Cüneyt Göksu DB2 SME, Information Champion, IBM Gold Consultant 1
- 2. Who am I? BS, Computer Science, YTU, Istanbul, 1990 MBA, Marmara University, Istanbul, 1992 MS in CS, IIT, Chicago, 1994 20+ years in “Information Management” Technologies 1996 IDUG (International DB2 Users Group) 2004 TDUG (Turkish DB2 Users Group) 2008-2010 IBM Data Champion 2009 IBM Gold Consultant 2011 IDUG BOD 2
- 3. Mainframe – LegendNever Ends •1964: IBM® System/360™ •Obsolete? New trend? •Trusted for mission-critical data •Capability to maintain both old and new applications •SOA (Service-Oriented Architecture) enabled •z/OS – Most widely used mainframe operating system •DB2 for z/OS – IBM’s mainframe relational database management system – Since 1983! 3
- 4.
- 5.
- 6.
- 7. What is DB2for z/OS? • Relational Data Base Management System (RDBMS) – Data base consists of tables • Simple concepts • Dynamic relationships – Structured query language (SQL) • High level – Data Manipulation Language (DML) – Data Definition Language (DDL) – Data Control Language (DCL) • User specifies WHAT not HOW – RDBMS facilities • Integrity • Dynamic definition of DB2 objects • Active catalog • Recovery / restart • Continuous operations • Security • Interactive tools 7
- 8. The system’s view • Distributed Utility Applications Utility WebSphere TSO BATCH DB2 CICS IMS Application Server Trxb Trxa Prog2 Appl2 Appl1 Trx2 Prog1 Trx1 • DB2 receives MANY requests from MANY user programs to access potentially the SAME data • Besides USER PROGRAMS, DB2 also receives requests from UTILITIES 8
- 9.
- 10.
- 11.
- 12.
- 13.
- 14.
- 15.
- 16.
- 17.
- 18.
- 19.
- 20.
- 21.
- 22.
- 23.
- 24.
- 25.
- 26.
- 27.
- 28.
- 29.
- 30.
- 31.
- 32.
- 33.
- 34.
- 35.
- 36.
- 37.
- 38.
- 39.
- 40.
- 41.
- 42.
- 43.
- 44.
- 45.
- 46.
- 47.
- 48.
- 49.
- 50. The Risks ofDatabase Failures 50
- 51.
- 52.
- 53.
- 54.
- 55.
- 56.
- 57.
- 58. COPY/RECOVER utilities RECOVER UPDATE UPDATE DELETE Log Time COPY DISK CRASH IMAGE COPY 58
- 59.
- 60.
- 61.
- 62.
- 63.
- 64.
- 65.
- 66.
- 67.
- 68.
- 69.
- 70.
- 71.
- 72.
- 73.
- 74.
- 75.
- 76.
- 77. Data integrity andconcurrency EMPLOYEE Table Prog1 Prog2 1 EXCLUSIVE Row LOCK UPDATE STOP ... WAIT ... 2 RELEASE .. LOCK SELECT . OK 3 SHARED LOCK COMMIT 4 DB2 must maintain data integrity and also provide maximum concurrency 77
- 78.
- 79.
- 80.
- 81.
- 82.
- 83.
- 84.
- 85.
- 86.
- 87.
- 88. DB2 Security 88
- 89. Roles and interfacesin DB2 Security Administrator Operations System Data Administration Administrator Capacity Functional Technical Planner Designer Designer z/OS Database Sysprog Administrator Programmer CICS/IMS Sysprog TP Specialist 89
- 90.
- 91.
- 92.
- 93.
- 94.
- 95. Location transparency, Scalability,Phased growth, Portability of application 95
- 96.
- 97.
- 98.
- 99.
- 100.
- 101.
- 102.
- 103.
- 104.
- 105.
- 106.
- 107.
- 108. DB2 for z/OSdata sharing z/OS z/OS z/OS DB2 DB2 DB2 z/OS z/OS DB2 SHARED DB2 DASD z/OS z/OS z/OS DB2 DB2 DB2 • Improved availability • Incremental processing growth • Huge queries feasible • Configuration flexibility • SYSPLEX hardware required • Dynamic workload balancing • Single shared catalog 108
- 109. CENG497 - DB2for z/OS Seminar – May 26th 2011 – Middle East Technical University, Ankara Q&A Cüneyt Göksu DB2 SME, Information Champion, IBM Gold Consultant [email protected] 109