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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.
Sort/merge is important enough that there are multiple companies each selling their own sort/merge package for IBM mainframes. IBM's original OS/360 sort/merge program, 360S-SM-023, program name IERRCO00 (alias SORT), supported only IBM's first-generation direct-access storage devices (DASD) [ d ] and tapes (2400).
CPCS is run on IBM System/360 and later IBM mainframe computers and receives the data from the document processor and can store information from the cheques, including the bank number, branch number, account number and the amount the check was written for, as well as internal transaction codes. [11] IBM withdrew CPCS from marketing on Nov 29 ...
Innovative Routines International (IRI), Inc. is an American software company first known for bringing mainframe sort merge functionality into open systems. [1] IRI was the first vendor to develop a commercial replacement for the Unix sort command, and combine data transformation and reporting in Unix batch processing environments. [2]
IBM Data Facility Sort (DFSORT) Release 10.0; In addition to replacing part of the device support in the base MVS/SP, DFP replaces the Linkage Editor and several utility programs and service aids. DFP is no longer available as a separate product, but has become part of Data Facility Storage Management Subsystem, under the name DFSMSdfp.
The IBM System/370 (S/370) is a range of IBM mainframe computers announced as the successors to the System/360 family on June 30, 1970. The series mostly [b] maintains backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement.
Democratic political strategist James Carville, who has been openly critical of the Harris campaign since Democrats’ 2024 election losses, reflected on his failed prediction that Vice President ...
The sort ends with a single k-way merge, rather than a series of two-way merge passes as in a typical in-memory merge sort. This is because each merge pass reads and writes every value from and to disk, so reducing the number of passes more than compensates for the additional cost of a k -way merge.