Parameter Values and Domains

Input and output parameters can be based on a domain. The main three reasons to base a parameter on a domain, are:

·	To differentiate between simple parameter values containing text-like values and XML-like values.

Examples of simple parameter values are: BRAZIL, and: 65.

An example of a complex parameter value is:

<TOUR>BRAZIL</TOUR>

</MyXMLParameter>

·	To ensure that parameter values conform to the XML datatype specified for this parameter, for example: xsd:date, or xsd:double.

This means that for a domain based on a DATE data type, and with IO Format set to: YYYY-MM-DD, both the data type and IO Format are applied in the following SQL Statement of a method:

SELECT start_date

FROM schedtour

WHERE schedtour_id = :MySchedtourID

AND start_date > :MyStartDate

·	To ensure that the definitions of the exchanged XML data , as defined in an XML schema document, are interpreted correctly by USoft. For example, an XML schema restriction for an AGE simple type between 1 and 120 should be reflected in an AGE domain with a minimum and maximum value.