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XML Schema choice Element

Definition and Usage

The choice element in XML Schema allows only one of the elements contained within it.

Element Information

Syntax

(? symbol declares that the element can occur zero or one time within the choice element, * symbol declares that the element can occur zero or more times.)

Attribute Description
id Optional. Specifies a unique ID for the element.
maxOccurs Optional. Specifies the maximum number of times the choice element can appear within its parent element. The value can be an integer greater than or equal to zero. Use the string "unbounded" if no limit is desired. The default value is 1.
minOccurs Optional. Specifies the minimum number of times the choice element can appear within its parent element. The value can be an integer greater than or equal to zero. Set this attribute to zero to make the any group optional. The default value is 1.
any attributes Optional. Specifies any other attributes with non-schema namespaces.

Example 1

The above example defines that the "person" element must contain either an "employee" element or a "member" element.

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