The "Range Validator" is another entity attribute validator which can be be defined at either the entity or attribute level but pertains to an entity attribute just like the "Compare", "Key Exists", "Length" and "List" validators.
As it's name suggests you can use the "Range" validator to ensure that an attribute value falls either within or outside some specified minimum and maximum values. For example, ensure that an employee's salary is between $10,000 and $20,000.
For the purpose of demoing the "Range" validator I have created an ADF Fusion Web Application and created the basic business components that I will be using in this demo; an entity object based on the Employees HR table, a default view object based on the Employees entity object and a default application module.
In the “Type” combo select “Range”, select the attribute that you want to define the validator, in my demo it's the "Salary" attribute and then select an operator, either Between or NotBetween. In my demo I have selected the "Between" operator.
Under the range section define a minimum and a maximum value.
If you inspect the Employee’s entity source code you will see that
JDeveloper added a RangeValidationBean tag to the XML entity definition