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  • IMS DB HDAM, PHDAM, HIDAM, and PHIDAM databases

    A hierarchical direct (HD) database is a database that maintains the hierarchical sequence of its segments by having segments point to one another (instead of by physically storing the segments in the hierarchical sequence). HDAM HD databases are stored on direct-access devices in either a VSAM ESDS or an OSAM data set. In most cases, each segment in an…

  • Software Project Estimation Top Three Ideas

    Top methods you need to estimate software development project.

  • COBOL: How to Use INDEXED BY Clause

    COBOL Tricky example on OCCURS and Indexed By explained

  • Sample IMS DB and COBOL Program

    COBOL sample program on how to access IMS segments.

  • COBOL: How to Write Multi Dimensional Arrays

    Theory behind COBOL table why both Tables and Arrays are same in COBOL context with little difference. Read now.

  • How Cloud Capabilities in Mainframe Boost Productivity

    Mainframe Z13 has the capability and It delivers new mobile, analytic and cloud capabilities for moving enterprise systems in the digital economy. Read more.

  • How to use FTP from JCL in Mainframe

    The simplified JCL to issue FTP from your JCL. Really good for many mainframe projects to use FTP or SFTP.

  • Sample JCL to Run IMS Program for Your Project

    Here is a sample JCL to run the IMS DB program in the mainframe environment. You can customize it per your requirement.

  • Happy Ugadi 2011

    Dear Blog readers Happy Ugadi to you all 2011. I am very happy to celebrate this occasion as my blog started sofar one year completed. Thanks for reading. I welcome your suggestions to improve my blog further. Thank you!

  • JCL: Sysin DD* and SYSIN DD DATA

    Here is sample JCL of SYSIN card with DD* and DD DATA. Here, I have shared with example when to use these two.

  • IMS- ACB(Access control block)

    IMS™ builds the ACB with the ACBGEN utility by merging information from the PSB and DBD. For execution in a batch environment, IMS can build ACBs either dynamically (PARM=DLI), or it can prebuild them using the ACB Maintenance utility (PARM=DBB). ACB Lib ACBs must be prebuilt for use by online application programs. ACBs cannot be prebuilt for GSAM DBDs. However, ACBs can be prebuilt for PSBs that reference GSAM…

  • COBOL – How to Use ‘ CANCEL’

    Global, External, Initial what is the difference in COBOL