 2001 Prentice Hall, Inc. All rights reserved. 1 Chapter 7 – Schemas Outline 7.1Introduction 7.2Schemas vs. DTDs 7.3Microsoft XML Schema: Describing Elements 7.4Microsoft XML Schema: Describing Attributes 7.5Microsoft XML Schema: Data types 7.6W3C XML Schema 7.7Case Study: Writing a Microsoft XML Schema for the Day Planner Application 7.8Internet and World Wide Web Resources

 2001 Prentice Hall, Inc. All rights reserved. Outline 2 Fig. 7.1Microsoft XML Schema document <ElementType name = "message" content = "textOnly" 9 model = "closed"> 10 Text messages <ElementType name = "greeting" model = "closed" 14 content = "mixed" order = "many"> <ElementType name = "myMessage" model = "closed" 19 content = "eltOnly" order = "seq"> <element type = "greeting" minOccurs = "0" 22 maxOccurs = "1"/> 23 <element type = "message" minOccurs = "1" 24 maxOccurs = "*"/>

 2001 Prentice Hall, Inc. All rights reserved. Outline 3 Fig. 7.2XML document that conforms to intro- schema.xml Welcome to XML Schema! 9 This is the first message This is the second message. 13

 2001 Prentice Hall, Inc. All rights reserved. 4

Outline 5 Fig. 7.3Well-formed, but invalid XML document Welcome to XML Schema! 9 10 This is a message that contains another message. 11 This is the inner message

 2001 Prentice Hall, Inc. All rights reserved. 6

7 Fig. 7.4ElementType element attributes.

 2001 Prentice Hall, Inc. All rights reserved. 8 Fig. 7.4ElementType element attributes. (Part 2)

 2001 Prentice Hall, Inc. All rights reserved. 9 Fig. 7.5Element ElementType’s child elements.

 2001 Prentice Hall, Inc. All rights reserved. 10 Fig. 7.6Element element attributes.

 2001 Prentice Hall, Inc. All rights reserved. 11 Fig. 7.7Element group’s attributes.

 2001 Prentice Hall, Inc. All rights reserved. 12 Fig. 7.8Element AttributeType’s attributes.

 2001 Prentice Hall, Inc. All rights reserved. 13 Fig. 7.9Element attribute’s attributes.

 2001 Prentice Hall, Inc. All rights reserved. Outline 14 Fig Demonstrating AttributeType and attribute <ElementType name = "contact" content = "eltOnly" order = "seq" 9 model = "closed"> <ElementType name = "name" content = "textOnly" 24 model = "closed"/> <ElementType name = "address1" content = "textOnly" 27 model = "closed"/> 28

 2001 Prentice Hall, Inc. All rights reserved. Outline 15 Fig Demonstrating AttributeType and attribute. (Part 2) 29 <ElementType name = "address2" content = "textOnly" 30 model = "closed"/> <ElementType name = "city" content = "textOnly" 33 model = "closed"/> <ElementType name = "state" content = "textOnly" 36 model = "closed"/>

 2001 Prentice Hall, Inc. All rights reserved. Outline 16 Fig. 7.11Contact list that conforms to contact- schema.xml Jane Doe Main St. 9 Sometown 10 Somestate

 2001 Prentice Hall, Inc. All rights reserved. 17

 2001 Prentice Hall, Inc. All rights reserved. 18 Fig. 7.12Some Microsoft XML Schema data types.

 2001 Prentice Hall, Inc. All rights reserved. Outline 19 Fig. 7.13Using Microsoft XML Schema data types <Schema xmlns = "urn:schemas-microsoft-com:xml-data" 7 xmlns:dt = "urn:schemas-microsoft-com:datatypes"> 8 9 <ElementType name = "bookstore" content = "eltOnly" 10 order = "many" model = "closed"> <ElementType name = "shipping" content = "eltOnly" order = "seq" 17 model = "closed"> 18

 2001 Prentice Hall, Inc. All rights reserved. Outline 20 Fig. 7.13Using Microsoft XML Schema data types. (Part 2) 19 <AttributeType name = "shipID" dt:type = "id" 20 required = "yes"/> <ElementType name = "duration" content = "textOnly" 27 model = "closed" dt:type = "date"/> <ElementType name = "book" content = "textOnly" model = "closed" 30 dt:type = "string">

 2001 Prentice Hall, Inc. All rights reserved. Outline 21 Fig. 7.14XML document conforming to id-schema.xml Java How to Program 3rd edition C How to Program 3rd edition C++ How to Program 3rd edition

 2001 Prentice Hall, Inc. All rights reserved. 22

 2001 Prentice Hall, Inc. All rights reserved. 23 Fig. 7.15Invalid XML document.

 2001 Prentice Hall, Inc. All rights reserved. Outline 24 Fig. 7.16Schema for an inventory document <Schema xmlns = "urn:schemas-microsoft-com:xml-data" 7 xmlns:dt = "urn:schemas-microsoft-com:datatypes"> 8 9 <ElementType name = "inventory" content = "eltOnly" 10 model = "closed"> <ElementType name = "book" content = "eltOnly" order = "seq" 15 model = "closed"> <AttributeType name = "isbn" dt:type = "string" 18 required = "yes"/> <AttributeType name = "inStock" dt:type = "enumeration" 22 dt:values = "yes no" default = "no"/> 23 24

 2001 Prentice Hall, Inc. All rights reserved. Outline 25 Fig. 7.16Schema for an inventory document. (Part 2) <ElementType name = "name" content = "textOnly" model = "closed" 35 dt:type = "string"/> <ElementType name = "price" content = "textOnly" model = "closed" 38 dt:type = "float"/> <ElementType name = "quantity" content = "textOnly" 41 dt:type = "int" model = "closed"/> <ElementType name = "available" content = "textOnly" 44 dt:type = "date" model = "closed"/> 45

 2001 Prentice Hall, Inc. All rights reserved. Outline 26 Fig. 7.17XML document conforming to inventory- schema.xml Java How to Program 3/e Perl How to Program

 2001 Prentice Hall, Inc. All rights reserved. Outline 27 Fig. 7.18W3C XML Schema document <xsd:element ref = "greeting" minOccurs = "0" 19 maxOccurs = "1"/> 20 <xsd:element ref = "message" minOccurs = "1" 21 maxOccurs = "unbounded"/> 22 23

 2001 Prentice Hall, Inc. All rights reserved. Outline 28 Fig. 7.19Document that conforms to xml- schema.xsd <myMessage 7 xmlns:xsd = " 8 xsd:noNamespaceSchemaLocation = "xml-schema.xsd"> 9 10 Welcome to W3C XML Schema! 11 This is a message. 12 This is another message

 2001 Prentice Hall, Inc. All rights reserved. 29

 2001 Prentice Hall, Inc. All rights reserved. Outline 30 Fig. 7.20Microsoft XML Schema for dayplanner.xml <Schema xmlns = "urn:schemas-microsoft-com:xml-data" 7 xmlns:dt = "urn:schemas-microsoft-com:datatypes"> 8 9 <ElementType name = "planner" content = "eltOnly" 10 model = "closed">

 2001 Prentice Hall, Inc. All rights reserved. Outline 31 Fig. 7.20Microsoft XML Schema for dayplanner.xml. (Part 2) <ElementType name = "note" content = "textOnly" model = "closed" 31 dt:type = "string">