Introduction to DB2 for z/OS
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DB2 for z/OS architecture

Introduction to DB2 for z/OS

z/OS® and the IBM® System z10™, System z9® 109, and zSeries® 890, and zSeries 990 systems offer architecture that provides qualities of service that are critical for e-business.

  • z/Architecture and the z/OS operating system
    z/OS, which is highly secure, scalable, and open, offers high-performance that supports a diverse application execution environment. The tight integration that DB2 has with the System z architecture and the z/OS environment creates a synergy that allows DB2 to exploit advanced z/OS functions.
  • DB2 in the z/OS environment
    DB2 operates as a formal subsystem of z/OS and works efficiently with other z/OS subsystems and components.
  • DB2 internal resource lock manager
    The DB2 internal resource lock manager (IRLM) is both a separate subsystem and an integral component of DB2. IRLM works with DB2 to control access to your data.
  • DB2 and the z/OS Security Server
    The z/OS Security Server prevents unauthorized system access and can protect DB2 resources, such as tables. The z/OS Security Server is sometimes referred to as RACF®, which is one of its key components.
  • DB2 and DFSMS
    You can use the DFSMSdfp Storage Management Subsystem (SMS) to manage DB2 disk data sets.
  • DB2 attachment facilities
    An attachment facility provides the interface between DB2 and another environment. You can also begin DB2 sessions from other environments on clients such as Microsoft® Windows® or UNIX® by using interfaces like ODBC, JDBC, and SQLJ.
  • Distributed data facility
    The distributed data facility (DDF) allows client applications that run in an environment that supports DRDA® to access data at DB2 servers. In addition, a DB2 application can access data at other DB2 servers and at remote relational database systems that support DRDA.
  • DB2 in a Parallel Sysplex environment
    The Parallel Sysplex® is a key example of the synergy of DB2 and the IBM System z environment.
Parent topic: DB2: The relational database management system for the z/OS environment

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