The staging code for
the SAP ERP, MS SCOM, and HP Reporter adapters is designed to read
in only those rows in the input database that were not previously
staged. Even though the staged table is overwritten each time a staging
job is executed, a record is kept of the data that was read. This
ensures that only new data is read when the staging job is run.
The control data sets
determine the raw data observations that should be staged. If the
control data sets do not exist when the staging job is executed, then
all of the data in the input database is staged.
The staging code for
the SAP ERP, MS SCOM, and HP Reporter adapters always uses the control
data sets so that only new data is staged. Therefore, the duplicate-data
checking option is activated by default for these adapters. All subsequent
staging jobs that specify that adapter's staging library location
use that library's control data sets.