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Exam 3: Working With Basic Schemas

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Question 41

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Discuss the limits of DTDs, using examples.

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DTDs are commonly used for validation la...

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Question 42

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To specify the number of occurrences for a particular character or group of characters,  a(n) quantifier can be appended to a character type or set .

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Question 43

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The _____ and extension elements are important tools used by XML Schema to derive new data types and design complex content models.

Case 3-2 Judy has begun to apply the basic information that you have given her about schemas, and she would now like your help in mastering the details of how schemas work.  Judy has included the following element definition in her schema:      <xs:element name="ingredient">             <xs:complexType>                   <xs:sequence>                         <xs:element name="name" type="xs:string" />                         <xs:element name="amount" type="xs:string" />                   </xs:sequence>             </xs:complexType>      </xs:element> -In this schema, w hat type of element is ingredient ?

Describe the three components involved in deriving any new data type.

XML Schema supports a collection of built-in data types, but does not allow users to define their own.

The choice compositor requires that child elements must appear either only once or not at all.

XML Schema divides its user-derived data types into two classes: primitive and derived.

Perhaps the most commonly used data type in XML Schema is _____ .

A list data type uses _____ as the delimiter.

The _____ facet specifies the maximum number of decimal places to the right of the decimal point in the data type's value.

What are the limitations of mixed content elements? Under what circumstances should you not use them?

To specify that an element contains both text and child elements, add the _____ attribute to the <complexType> of an element.

In a new data type, the _____  is the set of values that correspond to the data type.

The _____ compositor allows any of the child elements to appear in any order in the instance document.

The values belonging to the data type indicated in the accompanying figure must be _____  IDs.

A base type is one of _____ fundamental data types not defined in terms of other types.

To indicate whether an attribute is required, you add the _____ attribute to the element declaration or reference.

A(n) _____  type contains two or more values placed within a defined structure in XML Schema.

With the xs:float data type, non-numeric values can be represented by _____.