Answer / shar

datastage depends on configuration file.
Well if u know abt of configuration file then here i go with
the ans...
APT_CONFIG_FILE is the environment variable using which
datastage determine the configuration file.That will give us
an option to mention our designed configuration file instead
of default.apt which is default configuration file. And one
can have many configuration files for a project to be used.

In any job at job properties- properties tab we will be
asked to give name parameter name and its corresponding
default value.
However we will select $APT_CONFIGURATION_FILE and to use
our designed configuration file we mention that in Default
value column. So in that way we use config file as parameter.

Thats it.

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