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- Mainframe_sort_merge abstract "The Sort/Merge utility is a mainframe program to sort records in a file into a specified order, merge pre-sorted files into a sorted file, or copy selected records. Internally, these utilities use one or more of the standard sorting algorithms, often with proprietary fine-tuned code.Mainframes were originally supplied with limited main memory by today's standards. The amount of data to be sorted was frequently very large. Because of this, unlike more recent sort programs, early sort/merge programs placed great emphasis on efficient techniques for sorting data on secondary storage, typically tape or disk. In 1968 the OS/360 Sort/Merge program provided five different "sequence distribution techniques" that could be used depending on the number and type of devices available.Sort/Merge is very frequently used; often the most commonly used application program in a mainframe shop.Modern sort/merge programs also can copy files, select or omit certain records, summarize records, remove duplicates, reformat records, append new data and produce reports. Indeed most "Sort/Merge" applications use the wide range of additional processing capabilities, rather than purely sorting or merging records: The Sort/Merge product is a very fast way of performing input to and output from these functions.Sort/merge is important enough that there are multiple companies each selling their own sort/merge package for IBM mainframes and their z/OS, z/VM and z/VSE operating systems. The major Sort/Merge packages are: DFSORT sold by IBM. SyncSort sold by Syncsort, Inc. CA-Sort sold by CA Technologies.(Some of these also sell versions for other platforms, such as Unix, Linux, or Windows.)Some Basic DFSORT and SyncSort examples are mentioned in the blog mframes.blogspot.com".
- Mainframe_sort_merge wikiPageExternalLink mframes.blogspot.com.
- Mainframe_sort_merge wikiPageExternalLink docview.wss?rs=114&uid=isg3T7000080.
- Mainframe_sort_merge wikiPageID "12640055".
- Mainframe_sort_merge wikiPageRevisionID "563708028".
- Mainframe_sort_merge hasPhotoCollection Mainframe_sort_merge.
- Mainframe_sort_merge subject Category:Data_processing.
- Mainframe_sort_merge subject Category:IBM_mainframe_operating_systems.
- Mainframe_sort_merge type Software.
- Mainframe_sort_merge type Work.
- Mainframe_sort_merge type CreativeWork.
- Mainframe_sort_merge type InformationEntity.
- Mainframe_sort_merge comment "The Sort/Merge utility is a mainframe program to sort records in a file into a specified order, merge pre-sorted files into a sorted file, or copy selected records. Internally, these utilities use one or more of the standard sorting algorithms, often with proprietary fine-tuned code.Mainframes were originally supplied with limited main memory by today's standards. The amount of data to be sorted was frequently very large.".
- Mainframe_sort_merge label "Mainframe sort merge".
- Mainframe_sort_merge sameAs m.02wz4r2.
- Mainframe_sort_merge sameAs Q6736621.
- Mainframe_sort_merge sameAs Q6736621.
- Mainframe_sort_merge wasDerivedFrom Mainframe_sort_merge?oldid=563708028.
- Mainframe_sort_merge isPrimaryTopicOf Mainframe_sort_merge.