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Image Enhancements in 6.5 Exp. 2 & 7.0 Exp. 1
Several enhancements to Image/SQL were included in Express releases for MPE/iX 6.5 and 7.0. The enhancements listed below are from a presentaion given by Vikram Kumar of HP CSY at HP World 2001. The complete presentation is available online at http://jazz.external.hp.com/papers/HPWorld_01/HPSQL/index.html. Some of the highlights include:
  • Increase limits of a database

    240 Datasets per database (up from 199)
    1200 Data Items per database (up from 1023)
    64 Paths from master to detail datasets (up from 16)

    A complete list of current TurboImage limits is available on our web site in Section 4.7 Capacities & Maximums of The TurboIMAGE FAQ

  • Support of dataset size > 80 GB

    Requires a one-time database conversion. Fully compatible with existing applications, no need to recompile any programs.

  • Find by Record number in QUERY

    When you have is a relative record number Query will retrieve the record for you. Programmatically this is a DBGET Mode 4. DBDRIVER is a common way of doing this today.

  • Display percent completion in QUERY

    Currently QUERY provides no feedback at all during data retrieval. And when you press CTRL-Y it responds with a number of records qualified but doesn't let you know how many records it has processed. This enhancement will provide better progress information.

  • Large file data set

    Currently any Image dataset larger than 4GB is stored in multiple HFS files called chunks.
    This enhancement allows Image to take advantage of MPE files > 4GB in place of Jumbo datasets providing a single MPE file to represent a dataset.

  • TurboIMAGE scalability II

    Implementing a more effective internal locking strategy to provide more concurrency on DBPUT/DBDELETE.

 

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Last modified: 01/20/06