Referring to specific information inside an XML document is a little like finding a needle in a haystack: how do you differentiate the information you need from everything else? XPath and XPointer are two closely related languages that play a key role in XML processing by allowing developers to find these needles and manipulate embedded information. XPath describes a route for finding specific items by defining a path through the hierarchy of an XML document, abstracting only the information that's relevant for identifying the data. XPointer extends XPath to identify more complex parts of documents. The two technologies are critical for developers seeking needles in haystacks in various types of processing. XPath and XPointer fills an essential need for XML developers by focusing directly on a critical topic that has been covered only briefly. Written by John Simpson, an author with considerable XML experience, the book offers practical knowledge of the two languages that underpin XML, XSLT and XLink. XPath and XPointer cuts through basic theory and provides real-world examples that you can use right away.Written for XML and XSLT developers and anyone else who needs to address information in XML documents, the book assumes a working knowledge of XML and XSLT. It begins with an introduction to XPath basics. You'll learn about location steps and paths, XPath functions and numeric operators. Once you've covered XPath in depth, you'll move on to XPointer--its background, syntax, and forms of addressing. By the time you've finished the book, you'll know how to construct a full XPointer (one that uses an XPath location path to address document content) and completely understand both the XPath and XPointer features it uses. XPath and XPointer contains material on the forthcoming XPath 2.0 spec and EXSLT extensions, as well as versions 1.0 of both XPath and XPointer. A succinct but thorough hands-on guide, no other book on the market provides comprehensive information on these two key XML technologies in one place.

SAP BW has recently come to the fore as a valuable tool for developing data warehouses that accurately and effectively support critical business decision making. It facilitates easy-to-use and high-performance extraction, transfer, transformation, and loading of data from a variety of data sources, including such comprehensive business management systems as SAP R/3. This practitioner's guide uses step-by-step instructions complete with a plethora of screen captures to illustrate key SAP BW functionalities. It demonstrates how SAP BW implements the fundamental star schema and solves the major challenges inherent in the creation of data warehouses: performance, reliability, and error-handling. Using a real-world business scenario as a running example, presents a comprehensive view of the technology, from underlying concepts and basic techniques through its most sophisticated capabilities. SAP® BW Specific topics covered include: Creating an InfoCube and loading the data Checking the accuracy of data with BW Monitor and the Persistent Staging Area (PSA) Creating queries to generate reports using Business Explorer (BEx) Managing user authorization with the Profile Generator Advanced InfoCube design techniques Aggregates and multicubes Working with the Operational Data Store (ODS) Installing business content and creating an R/3 source system in BW Loading data from SAP R/3 into SAP BW Data maintenance Performance tuning, including parallel query option and data packet sizing Object transport Although the focus is on the core SAP BW technology, this book also discusses other relevant technologies, including Basis, ABAP (Advanced Business Application Programming), ALE (Application Link Enabling), and ASAP (Accelerated SAP) for BW. With the clear explanations and practical techniques presented in information systems professionals will gain both the general understanding and specific skills necessary to create high quality data warehouses that support effective decision making. SAP® BW 0201703661B07092002

Database management. It may sound daunting, but it doesn't have to be, even if you've never programmed before. SQL: Visual QuickStart Guide isn't an exhaustive guide to SQL written for aspiring programming experts. It's simply an invaluable resource for those who want a fast, easy way to harness information living in complex databases. Because author Chris Fehily assumes no prior programming experience on your part (just a familiarity with your OS's file system), he spends the first few chapters laying out the basics, including clear explanations of the relational database model and SQL syntax. Then he jumps into step-by-step tasks designed to get you comfortable using SQL right away. You'll learn how to use SQL's most popular statements and commands to maintain, retrieve, and analyze database information, and to create and edit database objects. Each visually oriented task features the actual code and plenty of screenshots to keep you on track. Fehily takes a software-independent approach to teaching SQL, but includes tips for specific database software. You may not be a programming expert, but with SQL: VQS, who will be able to tell?

Special Edition Using XML, Second Edition gives developers a formal introduction to XML technology, starting with in-depth coverage of basic syntax and fundamental "pieces" of XML, including DTDs, Schemas, and Namespaces. The authors then cover various applications of XML, including transforming and displaying XML documents using CSS and XSL, locating data within XML documents using Xpath, Xlink and Xpointer, programming XML with SAX or DOM, including XML in Java or .NET applications, XML Scripting with Perl, XHTML and WML for presentation on traditional and hand-held Web browsers, and querying data or documents with Xquery. The final chapters cover technologies related to XML such as SVG, SMIL, and RDF, focusing on the practical features developers can put to use today.

The explosive growth of the World Wide Web is fueling the need for a new generation of technologies for managing information flow, data, and knowledge. This developer's overview and how-to book provides a complete introduction and application guide to the world of topic maps, a powerful new means of navigating the World Wide Web's vast sea of information. With contributed chapters written by today's leading topic map experts, is designed to be a "living document" for managing information across the Web's interconnected resources. The book begins with a broad introduction and a tutorial on topic maps and XTM technology. The focus then shifts to strategies for creating and deploying the technology. Throughout, the latest theoretical perspectives are offered, alongside discussions of the challenges developers will face as the Web continues to evolve. Looking forward, the book's concluding chapters provide a road map to the future of topic map technology and the Semantic Web in general. XML Topic Maps Specific subjects explored in detail include: Topic mapping and the XTM specification Using XML Topic Maps to build knowledge repositories Knowledge Representation, ontological engineering, and topic maps Transforming an XTM document into a Web page Creating enterprise Web sites with topic maps and XSLT Open source topic map software XTM, RDF, and topic maps Semantic networks and knowledge organization Using topic maps in education Topic maps, pedagogy, and future perspectives Featuring the latest perspectives from today's leading topic map experts, provides the tools, techniques, and resources necessary to plot the changing course of information management across the World Wide Web. XML Topic Maps 0201749602B08282002

If you need to create or use formal descriptions of XML vocabularies, the W3C's XML Schema offers a powerful set of tools for defining acceptable document structures and content. An alternative to DTDs as the way to describe and validate data in an XML environment, XML Schema enables developers to create precise descriptions with a richer set of datatypes?such as booleans, numbers, currencies, dates and times?that are essential for today?s applications.Schemas are powerful, but that power comes with substantial complexity. This concise book explains the ins and outs of XML Schema, including design choices, best practices, and limitations. Particularly valuable are discussions of how the type structures fit with existing database and object-oriented program contexts. With XML Schema, you can define acceptable content models and annotate those models with additional type information, making them more readily bound to programs and objects. Schemas combine the easy interchange of text-based XML with the more stringent requirements of data exchange, and make it easier to validate documents based on namespaces.You?ll find plenty of examples in this book that demonstrate the details necessary for precise vocabulary definitions. Topics include: In addition to the explanatory content, Foundations of XML Schema syntax Flat, "russian-doll", and other schema approaches Working with simple and complex types in a variety of contexts The built-in datatypes provided by XML Schema Using facets to extend datatypes, including regular expression-based patterns Using keys and uniqueness rules to limit how and where information may appear Creating extensible schemas and managing extensibility Documenting schemas and extending XML Schema capabilities through annotations XML Schemaprovides a complete reference to all parts of both the XML Schema Structures and XML Schema Datatypes specifications, as well as a glossary. Appendices explore the relationships between XML Schema and other tools for describing document structures, including DTDs, RELAX NG, and Schematron, as well as work in progress at the W3C to more tightly integrate XML Schema with existing specifications.No matter how you intend to use XML Schema - for data structures or document structures, for standalone documents or part of SOAP transactions, for documentation, validation, or data binding ? all the foundations you need are outlined in XML Schema.

Developing applications for the enterprise introduces challenges quite different from those associated with developing applications for desktops or small departments. This book offers a no-nonsense approach to enterprise development using Access 2002 as a front-end. it is written in a practical style and easily transitions the client/server neophyte to the sophisticated world of enterprise development. Although the book focuses on client/server development, the text covers other enterprise topics such as replication, trasaction processing, and data access pages. This book goes behond the basics covered by the many introductory books, but offers an easier read than the expert books available.

Tuning your database for optimal performance means more than following a few short steps in a vendor-specific guide. For maximum improvement, you need a broad and deep knowledge of basic tuning principles, the ability to gather data in a systematic way, and the skill to make your system run faster. This is an art as well as a science, and Database Tuning: Principles, Experiments, and Troubleshooting Techniques will help you develop portable skills that will allow you to tune a wide variety of database systems on a multitude of hardware and operating systems. Further, these skills, combined with the scripts provided for validating results, are exactly what you need to evaluate competing database products and to choose the right one. Forward by Jim Gray, with invited chapters by Joe Celko and Alberto Lerner Includes industrial contributions by Bill McKenna (RedBrick/Informix), Hany Saleeb (Oracle), Tim Shetler (TimesTen), Judy Smith (Deutsche Bank), and Ron Yorita (IBM) Covers the entire system environment: hardware, operating system, transactions, indexes, queries, table design, and application analysis Contains experiments (scripts available on the author's site) to help you verify a system's effectiveness in your own environment Presents special topics, including data warehousing, Web support, main memory databases, specialized databases, and financial time series Describes performance-monitoring techniques that will help you recognize and troubleshoot problems

XML and PHP is designed to introduce PHP developers to the synergies that become visible when their favorite web-scripting language is combined with one of the most talked about technologies of recent times, XML. XML and PHP teaches PHP developers how to use PHP's XML functions to develop and maintain XML-based web applications and sites, and it demonstrates the power inherent in the XML/PHP combination. This book provides information on all hte major XML technologies supported in PHP, demonstrating how the XML/PHP combination can be used to deliver cutting-edge web applications through practical examples and real-world case studies. XML and PHP serves as both an implementation guide to the topic and a handy desktop reference for quick lookups-combining all the information that developers need into a single, focused package.

Sams¿ PHP and MySQL Web Development, by Luke Welling and Laura Thomson, showed that there is a strong demand for books that describe how to use PHP together with a specific open-source database to develop Web applications. While MySQL is very popular, PostgreSQL is widely considered to be the more powerful of the two open-source databases. And PostgreSQL is rapidly gaining market share large organizations are beginning to use PostgreSQL instead of Oracle; the demand for PostgreSQL training and support has increased by some accounts 50% in the last six months; and Web hosting services increasingly offer PostgreSQL along with MySQL. PHP and PostgreSQL Advanced Web Programming focuses on the specific needs of a PostgreSQL developer and will detail how to make use of PostgreSQL¿s unique, advanced features to develop high-availability, fail-safe Web applications with PHP and PostgreSQL.

MySQL is the most popular SQL database in the open source community and is used almost universally by web sites running on open source systems. As powerful and flexible as it is lightweight and efficient, MySQL packs a large feature set into a very small and fast engine that now runs on more than 500,000 servers. This renowned online manual that has supported MySQL administrators and database developers for years is now available in paperback format. This book is an exact reproduction of the MySQL Reference Manual from the MySQL development team's Web site, minus some non-technical appendices. This version covers MySQL 4.0. Many sophisticated topics appear in this comprehensive manual, ranging from the hitches you may run into when first installing MySQL to internals that will help you tune your queries. MySQL Reference Manual contains all the comprehensive reference material one would expect for building the product, running administrative utilities, and using various API as well as MySQL's rich version of SQL. In addition, you can turn a page and find such unexpected riches as: A thorough comparison of MySQL with SQL standards and other databases A discussion of privileges and suggested uses of privileges to enhance security Directions for replicating a database and for running several MySQL servers on a single system Directions for initializing a database from a flat file Guidelines for estimating the performance of different queries A far-reaching discussion of optimization, with reference to the implementation of MySQL Investigations of the differences between data types and the pros and cons of each type of number, string, or timestamp An extended inquiry into the effects of using delayed inserts A candid explanation of why various errors occur and how to recover from them Tips for weighted, full-text searches Detailed descriptions of the features, strengths, and weaknesses of available table formats A guide to adding new functions to MySQL No serious MySQL user should be without this book.

More Java developers today want to work with XML, the technology that enables data to be transported intact over the Internet, but they don't have time to become XML experts. If this describes you, then you'll appreciate data binding, the new way of converting XML documents into Java objects, so those documents can be worked on and manipulated like any other Java object, then converted back to XML This new title provides an in-depth technical look at XML Data Binding. The book offers complete documentation of all features in both the Sun Microsystems JAXB API and popular open source alternative implementations (Enhydra Zeus, Exolabs Castor and Quick). It also gets into significant detail about when data binding is appropriate to use, and provides numerous practical examples of using data binding in applications. As Author Brett McLaughlin says "Too many books are written about technologies by people who barely understand them. I've already written two data binding implementations (Zeus, and a previous one for IBM DeveloperWorks.) I've actually used data binding for longer than the official specification has been in existence, and I've really been able to dig into what it takes to code an effective data biding implementation, as well as use one correctly. This book is part user guide, part under-the-hood manual, and part use-case. It's a powerful combination, and one I think people need."

"If we are to solve many of the problems facing us-in the cities, in the wild areas of the earth, in the atmosphere, and the oceans-we shall need the help of skilled users of GIS technology. If readers can master what is in this volume, they will be well started on this enterprise." -From the Foreword by Jack Dangermond President of ESRI Praise for previous editions: "One of only a small number of texts devoted to the technology of GIS that are truly introductory in nature. . . . Very readable and of moderate length. Those who are real novices to GIS will find this one attractive." -Computers and Geosciences "Well-rendered and very clear line drawings . . . well written, with a well-balanced blend of technical/theoretical concepts and more applied facts of GIS." -Professional Geographer Geographic Information Systems provides a practical, theory-driven overview of GIS that is supported with clear coverage of basic techniques. This treatment enables readers to understand the broad aspects of GIS without focusing on a specific software or discipline, such as engineering or geography. New features of this Third Edition include: up-to-date information on standardization efforts aimed at facilitating the exchange of ideas and data; technical content that is up to date with current hardware, software, database design, and analytical techniques; and comprehensive cost/benefit guidelines for choosing and evaluating a GIS, including coverage of organizational and technical issues. Complete with extensive references and links to online resources, Geographic Information Systems, Third Edition, is an exceptional resource for students of GIS, planning, land use, natural resources, civil and environmental engineering, real estate, and wildlife biology.

Web services enable the new generation of Internet-based applications. These services support application-to-application Internet communication--that is, applications at different network locations can be integrated to function as if they were part of a single, large software system. Examples of applications made possible by Web services include automated business transactions and direct (nonbrowser) desktop and handheld device access to reservations, stock trading, and order-tracking systems. Several key standards have emerged that together form the foundation for Web services: XML (Extensible Markup Language), WSDL (Web Services Definition Language), SOAP (Simple Object Access Protocol), and UDDI (Universal Description, Discovery, and Integration). In addition, ebXML (Electronic Business XML) has been specified to facilitate automated business process integration among trading partners. This book introduces the main ideas and concepts behind core and extended Web services' technologies and provides developers with a primer for each of the major technologies that have emerged in this space. In addition, summarizes the major architectural approaches to Web services, examines the role of Web services within the .NET and J2EE communities, and provides information about major product offerings from BEA, Hewlett-Packard, IBM, IONA, Microsoft, Oracle, Sun Microsystems, and others. Understanding Web Services Key topics include: XML facilities for structuring and serializing data How WSDL maps services onto communication protocols and transports WSDL support for RPC-oriented and document-oriented interactions SOAP's required and optional elements Message processing and the role of intermediaries in SOAP UDDI data formats and APIs How ebXML offers an alternative to Web services that supports reliable messaging, security, and trading-partner negotiations With , you will be well informed and well positioned to participate in this vast, emerging marketplace. Understanding Web Services

Today MQSeries offers the programmer more choices than ever in which to write new MQSeries applications, from the most traditional Message Queue Interface API all the way through to the popular and highly portable JMS interface. Because of the many options available, it can sometimes be difficult for an application programmer new to MQSeries to easily understand the differences and benefits of each, or appreciate the implications of using one programming approach versus another. This redbook will help you install, tailor and configure specialist tools such as JMS admin, and will help you to design/create MQSeries applications. It gives a broad and general understanding of the currently available MQSeries APIs. We do this first by describing some of the more common examples and coding patterns, and then explaining each one in turn using the different APIs MQSeries supports to show the merits of each particular programming choice. This redbook positions the different MQSeries programming choices against each other in such a way as to help the application writer to make a clearer and more informed judgment as to which is the most suitable programming method for a particular situation.

Single most authoritative guide from the inventor of the technique. Presents unique modeling techniques for e-commerce, and shows strategies for optimizing performance. Companion Web site provides updates on dimensional modeling techniques, links related to sites, and source code where appropriate.

MySQL is a popular and robust open source database product that supports key subsets of SQL on both Linux and Unix systems. MySQL is free for nonprofit use and costs a small amount for commercial use. Unlike commercial databases, MySQL is affordable and easy to use. This book includes introductions to SQL and to relational database theory. If you plan to use MySQL to build web sites or other Linux or Unix applications, this book teaches you to do that, and it will remain useful as a reference once you understand the basics. Ample tutorial material and examples are included throughout. This book has all you need to take full advantage of this powerful database management system. It takes you through the whole process from installation and configuration to programming interfaces and database administration. This second edition has a greatly enhanced administration chapter that includes information on administrative tools, server configuration, server startup and shutdown, log file management, database backup and restore, and database administration and repair. In addition, a new chapter on security describes data, server, and client-server security, while a chapter on extending MySQL provides an overview of MySQL internals and describes the use of MySQL user-defined functions. If you know C/C++, Java, Perl, PHP, or Python, you can write programs to interact with your MySQL database. In addition, you can embed queries and updates directly in an HTML file so that a web page becomes its own interface to the database. Managing and Using MySQL includes chapters on the programming language interfaces, and it also includes a complete reference section with specific function calls for each language. Also included in the reference section are references to the SQL language, and details of the MySQL system variables, programs, and utilities. New to the second edition is a reference to the internal MySQL tables, which will be of particular interest to those who want to work extensively with MySQL security.

If you write programs to run against an Oracle database, you spend a lot of time and mental energy writing queries to return the data your programs need. Knowledge of SQL, and particularly of Oracle's implementation of SQL, is the key to writing good queries in a timely manner. In this book, the authors share their knowledge of Oracle SQL, and show you many creative techniques that you can use to advantage in your own applications. This book shows you how to: Leverage Oracle's vast library of built-in SQL functions Query time-based data, and write joins involving date and time ranges Use Oracle SQL's hierarchical query features to deal with data best represented in a tree format Use DECODE and CASE to implement conditional logic in your queries Use Oracle's new, analytic SQL features to write ranking queries, lag and lead queries, windowing queries, and more Join data from two or more tables using the newly supported SQL92 join syntax In addition, you'll see how SQL can best be integrated with PL/SQL. You'll also learn various best practices to help you write SQL queries that perform efficiently. Precious few books on the market today go beyond discussing syntax and the barest rudiments of using Oracle SQL. This book changes that, showing you how to creatively leverage the full power of SQL to write queries in an Oracle environment.

The state-of-the-art publication in model-based process control—by leading experts in the field. In Techniques of Model-Based Control, two leading experts bring together powerful advances in model-based control for chemical-process engineering. Coleman Brosilow and Babu Joseph focus on practical approaches designed to solve real-world problems, and they offer extensive examples and exercises. Coverage includes: The nature of the process-control problem and how model-based solutions help to solve it Continuous time modeling: time domain, Laplace domain, and FOPDT models Feedforward, cascade, override, and single-variable inferential control approaches One and two degree of freedom Internal Model Control Model State Feedback and PI/PID Implementations of IMC Tuning and synthesis of 1DF and 2DF IMC for process uncertainty Estimation and inferential control using multiple secondary measurements Basic and advanced techniques of model identification and model-predictive control The appendices review the basics of Laplace transforms, feedback control, frequency response analysis, probability, random variables, and linear least-square regression. From start to finish, Techniques of Model-Based Control offers the real-world insight that professionals need to identify and implement the best control strategies for virtually any process.

The first Internet revolution was all about delivering information to people. We are now in the second revolution, which focuses on delivering information to systems. XML is the tool that makes this new revolution a reality, and Web services are the methods by which businesses will drive system-to-system communication. JSP(TM) and XML takes you beyond the basics, giving you practical advice and in-depth coverage. In the book, you'll learn the technologies and techniques needed to create your own Web services for use in JSP applications. Written by programmers for programmers, the book will help you successfully utilize these exciting technologies with minimal hassle and maximum speed. In you will: JSP™ and XML Learn how to use XML, XSLT, and XPath in your JSP site Program SAX to speed up your XML document processing Understand DOM to learn the W3C standard method of working with XML Coordinate cross-browser client-side XML utilization Understand the Web services alphabet Learn how to leverage Web services to simplify access to your data Learn how SOAP, WSDL, and UDDI integrate into Web Services Use JDOM and dom4J to easily work with XML files Design a balanced JSP site using XML Expand your knowledge of JSP to add new functionality to your Web pages Learn how to practically apply Servlet filters and listeners to a Web site Build dynamic JSP pages that can self- modify, making sites easier to maintain Understand how the new JSP XML syntax works Review the basics of database access within JSP Learn JSP tag library design and how tag libraries simplify using XML and Web Services