You define a query by specifying the rules that make up the query.
Using a query-by-example form and a point-and-click interface, you only need to enter an operator/value pair to match against in each field and the query definition is automatically constructed.
The following example shows a query definition consisting of 3 rules logically or'ed together. Each rule has 2 selection criteria logically and'ed together.
FormDuet Manager provides a large set of operators for defining a query.