Data set (IBM mainframe)
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High Quality Content by WIKIPEDIA articles! A data set, or dataset, is a computer file having a record organization. Thetured streams of bytes, but rather are organized in various logical record and block structures determined by the DSORG (data set organization), RECFM (record format), and other parameters. These parameters are specified at the time of the data set allocation (creation), for example with the Job Control Language DD statements. Inside a job they are stored in the Data Control Block (DCB), which is a data structure used to access datasets, for example using access methods.

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High Quality Content by WIKIPEDIA articles! A data set, or dataset, is a computer file having a record organization. Thetured streams of bytes, but rather are organized in various logical record and block structures determined by the DSORG (data set organization), RECFM (record format), and other parameters. These parameters are specified at the time of the data set allocation (creation), for example with the Job Control Language DD statements. Inside a job they are stored in the Data Control Block (DCB), which is a data structure used to access datasets, for example using access methods.