Name the document measurements1.xsd.

A XML declaration should be the first line.

This should list version 1.0 and an encoding of UTF-8

The XML Schema Namespace should use "http://www.w3.org/2001/XMLSchema" in its declaration.

Use the namespace xsd qualifier.

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Define a simple type, of type restriction, named "measurementType". This type should have a base of "xsd:string". Define two xsd:enumerations with values of "distanceType" and "weightType".

Define a simple type, of type "xsd:restriction", named "disType". This type should have a base of "xsd:string". Define two enumerations with values of "imperial" and "metric".

Define a simple type, of type "xsd:restriction", named "weiType". This type should have a base of "xsd:string". Define two enumerations with values of "troy" and "gram".

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Define an element with a name of "measurement".

Within "measurement", define a complex type.

Within this complex type, define a choice with minOccurs and maxOccurs both equal to "1".

Within this choice, define two elements.

The first choice is "distance" with an attribute of measureDistance with a type of disType

The second choice is "weight" with an attribute of measureWeight with a type of weiType

Define an attribute for this element. Name it "typeOfMeasurement" with a type of "measurementType"