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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.
The operation of SORT is directed by control statements, which are largely compatible among various IBM and third-party sort programs. The SORT or MERGE statement defines the sort keys— the fields on which the data is to be sorted or merged. This statement identifies the position, length, and data type of each key.
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]
Sort/Merge. Utility programs for file-to-file copy between devices and formats. Remote Job Entry allowing the BOS system to submit jobs to a remote System/360 and receive output. Data Management, consisting of supervisor support for Physical IOCS, and macros for Logical IOCS which could be incorporated into the user's processing programs.
Disk Operating System/360, also DOS/360, or simply DOS, is the discontinued first member of a sequence of operating systems for IBM System/360, System/370 and later mainframes. It was announced by IBM on the last day of 1964, and it was first delivered in June 1966. [1] In its time, DOS/360 was the most widely used operating system in the world ...
External sorting algorithms generally fall into two types, distribution sorting, which resembles quicksort, and external merge sort, which resembles merge sort. External merge sort typically uses a hybrid sort-merge strategy. In the sorting phase, chunks of data small enough to fit in main memory are read, sorted, and written out to a temporary ...
Mainframe sort merge; Support programs for OS/360 and successors; Michigan Terminal System; MTS system architecture; MUSIC/SP; MVS; O. Object access method ...
STRING and UNSTRING, which concatenate and split strings, respectively. INSPECT, which tallies or replaces instances of specified substrings within a string. SEARCH, which searches a table for the first entry satisfying a condition. Files and tables are sorted using SORT and the MERGE verb merges and sorts files.