What is DD name in Cobol?

DD-NAME. A DD-NAME identifies the dataset or input/output resource. If this is an input/output file used by a COBOL/Assembler program, then the file is referenced by this name within the program.

What is DD statement function?

Data definition (DD) statements define the data sets that a program or procedure uses when it runs. You must code one DD statement for each data set that is used or created within a job step.

What is use of DSN parameter in DD statement?

The DISP parameters of DD statements help to prevent unwanted simultaneous access to data sets. In other words, the DISP parameter helps manage the integrity of data sets. The DSNAME parameter, or its abbreviation DSN, specifies the actual name of the data set.

What is volume in JCL?

VOLUME parameter used to identify the volume(s) on which the dataset resides or will reside. The volume request for new datasets can be private volume, retention of the volume, volume by serial number or the volume that other datasets uses. VOLUME is optional parameter.

What does DSN stand for ODBC?

Data Source Name
A Data Source Name (DSN) is the ODBC logical name for the drive and other information the database needs to access data. The name is used by Internet Information Services (IIS) for a connection to an ODBC data source.

What is Iebcopy utility in JCL?

JCL – IEBCOPY Utility IEBCOPY is a data set utility that is used to copy or merge members between one or more partitioned data sets or partitioned data sets extended (PDSEs). The copying can be full copy or partial copy. To copy selected (or all) members from one partitioned data set to another.

What is volume serial in mainframe?

The Volume serial field supports the inclusion of system symbols. You can enter a single volume name or a generic volume name to list data sets from more than one volume. The volume name can be partially specified using asterisks as global volume name characters and percent signs as placeholders in the volume name.

What is unit cart in JCL?

UNIT parameter used to ask the system to place the dataset on a specific device or a group of devices or the same device as another dataset. The UNIT parameter can also tell the system how many devices to assign and request that the system defer mounting the volume until the data set is opened.