IT Essentials or Definitive XML Schema

IT Essentials: PC Hardware and Software Companion Guide

Author: David Anfinson

The only Cisco authorized textbook that for the IT Essentials: PC Hardware and Software course from the Cisco Networking Academy Program
• New Companion Guide format complements the online curriculum with insight and instruction from Academy instructors
• A portable reference that supports all the topics in the new course, aligning 1:1 with course modules
• Features improved readability, enhanced topic explanations, real-world examples, and all new graphical presentations
• Alignment to A+ objectives

The IT Essentials: PC Hardware and Software Companion Guide supplements and complements the IT Essentials I: PC Hardware and Software v4.0 online curriculum offered by the Cisco Networking Academy Program.

The Companion Guide is designed as a supplemental textbook for the Networking Academy course, offering students a portable desk reference of the course content to use anytime anywhere as a study aid. The chapter content aligns 1:1 to the online course module topics, but does not merely mimic the content word-for-word. The authors present the course material in the Companion Guide in a comprehensive manner, providing their own examples where necessary to augment a student's understanding of the course material.
• Chapter Objectives as stated as questions at beginning of each chapter
• Key terms listed in the Chapter openers
• Enhanced readability for younger student comprehension
• How To Feature provides step-by-step tasks for common activities
• Key concept recaps, Check Your Understanding Questions, and next chapter previews are in a concise summary at the end of each chapter

The Companion Guide serves as an additional instructional tool for the instructor to assign take-home reading or give vocabulary quizzes to better prepare the students for in-class lab assignments.

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Definitive XML Schema (Charles F. Goldfarb Definitive Xml Series)

Author: Priscilla Walmsley

The authoritative XML Schema reference and tutorial!

• Leverage the full power of XML Schema!
• In-depth coverage of the approved W3C Recommendation
• Schema design—practical and thorough
• Transition help for experienced DTD developers
• Authoritative! By Priscilla Walmsley—a member of the W3C XML Schema Working Group

To leverage the full power of XML, companies need shared vocabularies to base their documents and scripts upon. XML Schema makes it possible to create those shared vocabularies-and Definitive XML Schema is the authoritative guide to the standard! Written by Priscilla Walmsley, a member of the W3C working group that created XML Schema, this book explains the W3C Recommendation with unprecedented insight and clarity—and introduces practical techniques for writing schemas to support any B2B, Web service, or content processing application. Coverage includes:

• How XML Schema provides a rigorous, complete standard for modeling XML document structure, content, and datatypes
• Working with schemas: Schema composition, instance validation, documentation, namespaces, and more
• XML Schema building blocks: elements, attributes, and types
• Advanced techniques: type derivation, model groups, substitution groups, identity constraints, redefinition, and much more
• An in-depth primer on effective schema design, including naming, document structure, and extensibility considerations
• Transition guidance for experienced DTD developers

Definitive XML Schema brings together expert guidance for schema design, superior approaches to schema development, and the most systematic XML Schema reference on the market. Whether you're a developer, architect, or content specialist, it's the only XML Schema resource you need!

Booknews

Written by a member of the W3C working group that created the XML Schema for creating shared vocabularies, this book explains the W3C Recommendation from an insider's perspective and introduces practical techniques for writing schemas to support any business-to-business Web service. Walmsley, a software architect specializing in XML architecture and data management, shows how the XML Schema provides a standard for modeling XML document structure, explains how to work with schemas, and describes advanced techniques. She also provides an in-depth primer on effective schema design, and transition guidance for experienced DTD developers. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Table of Contents:

	Acknowledgements	xxvi
Chapter 1	Schemas: An introduction	2
1.1	What is an XML schema?	3
1.2	The purpose of schemas	4
1.3	Schema design	6
1.4	Schema languages	8
Chapter 2	A quick tour of XML Schema	16
2.1	An example schema	17
2.2	The components of XML Schema	18
2.3	Elements and attributes	20
2.4	Data types	21
2.5	Simple types	23
2.6	Complex types	25
2.7	Namespaces and XML Schema	28
2.8	Schema composition	30
2.9	Instances and schemas	30
2.10	Annotations	32
2.11	Advanced features	32
Chapter 3	Namespaces	36
3.1	Namespaces in XML	37
3.2	The relationship between namespaces and schemas	47
3.3	Using namespaces in XSDL	49
Chapter 4	Schema composition	56
4.1	Modularizing schema documents	57
4.2	Defining schema documents	59
4.3	Schema assembly	60
4.4	Include, redefine, and import	65
Chapter 5	Instances and schemas	74
5.1	Using the instance attributes	75
5.2	Schema processing	77
5.3	Relating instances to schemas	79
5.4	Using XSDL hints in the instance	80
5.5	Dereferencing namespaces	83
5.6	The root element	84
5.7	Using DTDs and schemas together	87
5.8	Using specific schema processors	88
Chapter 6	Schema documentation and extension	96
6.1	The mechanics	97
6.2	User documentation	104
6.3	Application information	108
6.4	Notations	111
Chapter 7	Element declarations	118
7.1	Global and local element declarations	119
7.2	Declaring the data types of elements	126
7.3	Default and fixed values	128
7.4	Nils and nillability	132
7.5	Qualified vs. unqualified forms	137
Chapter 8	Attribute declarations	140
8.1	Global and local attribute declarations	141
8.2	Assigning types to attributes	148
8.3	Default and fixed values	149
8.4	Qualified vs. unqualified forms	152
Chapter 9	Simple types	154
9.1	Simple type varieties	155
9.2	Simple type definitions	157
9.3	Simple type restrictions	161
9.4	Facets	168
9.5	Preventing simple type derivation	177
Chapter 10	Regular expressions	180
10.1	The structure of a regular expression	181
10.2	Atoms	183
10.3	Quantifiers	198
Chapter 11	Union and list types	202
11.1	Varieties and derivation types	203
11.2	Union types	205
11.3	List types	209
Chapter 12	Built-in simple types	220
12.1	Built-in types	221
12.2	String-based types	223
12.3	Numeric types	231
12.4	Date and time types	237
12.5	Legacy types	247
12.6	Other types	256
12.7	Type equality	262
Chapter 13	Complex types	266
13.1	What are complex types?	267
13.2	Defining complex types	268
13.3	Content types	272
13.4	Using element types	275
13.5	Using model groups	283
13.6	Using attributes	293
Chapter 14	Deriving complex types	300
14.1	Why derive types?	301
14.2	Restriction and extension	302
14.3	Simple content and complex content	303
14.4	Complex type extensions	305
14.5	Complex type restrictions	314
14.6	Type substitution	334
14.7	Controlling type derivation and substitution	335
Chapter 15	Reusable groups	342
15.1	Why reusable groups?	343
15.2	Named model groups	344
15.3	Attribute groups	351
15.4	Reusable groups vs. complex type derivations	357
Chapter 16	Substitution groups	360
16.1	Why substitution groups?	361
16.2	The substitution group hierarchy	362
16.3	Declaring a substitution group	363
16.4	Type constraints for substitution groups	365
16.5	Alternatives to substitution groups	367
16.6	Controlling substitution groups	371
Chapter 17	Identity constraints	376
17.1	Identity constraint categories	377
17.2	Design hint: Should I use ID/IDREF or key/keyref?	378
17.3	Structure of an identity constraint	378
17.4	Uniqueness constraints	380
17.5	Key constraints	382
17.6	Key references	383
17.7	Selectors and fields	387
17.8	The XML Schema XPath subset	388
17.9	Identity constraints and namespaces	390
Chapter 18	Redefining schema components	396
18.1	Redefinition basics	397
18.2	The mechanics of redefinition	400
18.3	Redefining simple types	401
18.4	Redefining complex types	402
18.5	Redefining named model groups	404
18.6	Redefining attribute groups	407
Chapter 19	Topics for DTD users	412
19.1	Element declarations	413
19.2	Attribute declarations	420
19.3	Notations	423
19.4	Parameter entities for reuse	424
19.5	Parameter entities for extensibility	425
19.6	External parameter entities	431
19.7	General entities	433
19.8	Comments	434
19.9	Using DTDs and schemas together	436
Chapter 20	Naming considerations	438
20.1	Naming guidelines	439
20.2	Qualified vs. unqualified names	444
20.3	Structuring namespaces	450
20.4	Multiple languages	460
Chapter 21	Extensibility and reuse	464
21.1	Reuse	466
21.2	Extending schemas	467
21.3	Versioning of schemas	478
21.4	Designing applications to support change	482
Appendix A	Table of XSDL keywords	484
A.1	XSDL element types	485
A.2	XSDL attributes	494
Appendix B	Built-in simple types	504
B.1	Built-in simple types	505
	Index	511