DD (Data Definition) Statement in Job Control Language

It describes data sets to be used with in individual steps.

There are two parameters in DD statement.

They are,

1) Positional Parameters

In Positional Parameters, four parameters are there,

a) Instream Data (*)
b) Data
c) Dummy
d) DYNAM

More about Positional Parameters

2) Keyword Parameters

In Keyword Parameters, six and more parameters are there,

a) DCB
b) DSN
c) DISP
d) SPACE
e) LABEL
f) SYSOUT
g) UNIT

More about Keyword Parameters