A Data Set 1 filter is a component
of a comparison rule that specifies a subset of Data Set
1 objects to reconcile against Data Set 2 objects
when you use a comparison rule.
You use the Data Set 1 Filter sub tab on
the Comparison Rule tab to create clauses for Data
Set 1 filters. On this sub tab, you define filter clauses.
Each clause identifies an object and/or attribute in Data
Set 1 to select for evaluation when the comparison rule
is processed.
When working with comparison rules, it is important to understand
that all filtering and comparisons work on sets of objects and to
be aware of the way expressions operate with sets in reconciliation
comparisons. To designate which objects to select for processing,
a
Data Set 1 filter clause defines one of the
following conditions:
- Select an object from Data Set 1 if the
selected attribute matches a specified value based on the operator
selected. In this case, using the operator specified in the clause,
each top-level object in Data Set 1 and all
its children are evaluated. All objects with an attribute that matches
the value specified are selected for processing.
- Select an object from Data Set 1 if the
selected attribute of a class specification matches a specified value.
First, each top-level object in Data Set 1 and
all its children are evaluated. All objects that belong to the class
specified in the clause are selected. Any object that has a different
class is skipped. Next the filter uses the operator to evaluate the
attribute value for the objects that match the required class. All
objects with an attribute that matches the attribute value are selected
for processing.
- Select an object from Data Set 1 if the
specified classification exists. Each top-level object in Data
Set 1 and all its children are evaluated. All instances
that have the specified class are selected for processing.
To use Data Set 1 filters effectively, review
the documentation that describes filter components, the operators
that are used to select objects for evaluation, and the logical processes
that are applied when you use more than one filter clause.