Oracle PLSQL Language- P11

Chia sẻ: Thanh Cong | Ngày: | Loại File: PDF | Số trang:50

lượt xem

Oracle PLSQL Language- P11

Mô tả tài liệu
  Download Vui lòng tải xuống để xem tài liệu đầy đủ

Tham khảo tài liệu 'oracle plsql language- p11', công nghệ thông tin, cơ sở dữ liệu phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

Chủ đề:

Nội dung Text: Oracle PLSQL Language- P11

  1. Previous: About the Disk Preface Next: Acknowledgments Comments and Questions Please address comments and questions concerning this book to the publisher: O'Reilly & Associates 101 Morris Street Sebastopol, CA 95472 1-800-998-9938 (in the U.S. or Canada) 1-707-829-0515 (international or local) 1-707-829-0104 (FAX) You can also send us messages electronically. See the insert in the book for information about O'Reilly & Associates' online services. For corrections and amplifications for the book, check out If you have any questions about the disk supplied with this book, contact RevealNet Inc. at http:// Previous: About the Disk Oracle PL/SQL Next: Acknowledgments Programming, 2nd Edition About the Disk Book Index Acknowledgments The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  2. Previous: Which Platform Preface Next: Comments and or Version? Questions About the Disk The content of the companion Windows disk for this book has been included on this CD, in the / prog2/disk/ directory. This disk contains the Companion Utilities Guide for Oracle PL/SQL Programming, an online tool developed by RevealNet, Inc. that gives you point-and-click access to more than 100 files of source code and documentation that we developed. Many of the code examples are also printed in the book. We've included these to give you a jump start on writing your own PL/ SQL code and to keep you from having to type many pages of PL/SQL statements from printed text. Appendix A, describes how to install the Windows-based interface. You can run the software in any Microsoft Windows environment. If you are working in a non-Windows environment, you can obtain a compressed file containing the utilities on the desk from the RevealNet PL/SQL Pipeline Archives at Previous: Which Platform Oracle PL/SQL Next: Comments and or Version? Programming, 2nd Edition Questions Which Platform or Version? Book Index Comments and Questions The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  3. Previous: Conventions Preface Next: About the Disk Used in This Book Which Platform or Version? In general, all of the discussions and examples in this book apply regardless of the machine and/or operating system you are using. In those few cases where a feature is in any way system-dependent, I note that in the text. There are many versions of PL/SQL, and you may even find that you need to use multiple versions in your development work. Chapter 1, Introduction to PL/SQL describes in detail the many versions of PL/SQL and what you need to know about them; see Section 1.4, "PL/SQL Versions" in Chapter 1 in Chapter 1. Previous: Conventions Oracle PL/SQL Next: About the Disk Used in This Book Programming, 2nd Edition Conventions Used in This Book Index About the Disk Book The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  4. Previous: Audience Preface Next: Which Platform or Version? Conventions Used in This Book The following conventions are used in this book: Italic is used for file and directory names. Constant width is used for code examples. Constant width bold In some code examples, highlights the statements being discussed. Constant width italic In some code examples, indicates an element (e.g., a filename) that you supply. UPPERCASE In code examples, indicates PL/SQL keywords. lowercase In code examples, indicates user-defined items such as variables, parameters, etc. punctuation In code examples, enter exactly as shown. indentation In code examples, helps to show structure but is not required. -- In code examples, a double hyphen begins a single-line comment, which extends to the end of a line. /* and */ Please purchase PDF Split-Merge on to remove this watermark.
  5. In code examples, these characters delimit a multiline comment, which can extend from one line to another. . In code examples and related discussions, a dot qualifies a reference by separating an object name from a component name. For example, dot notation is used to select fields in a record and to specify declarations within a package. < > In syntax descriptions, angle brackets enclose the name of a syntactic element. [ ] In syntax descriptions, square brackets enclose optional items. ... In syntax descriptions, an ellipsis shows that statements or clauses irrelevant to the discussion were left out. Previous: Audience Oracle PL/SQL Next: Which Platform or Programming, 2nd Edition Version? Audience Book Index Which Platform or Version? The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  6. Previous: Structure of This Preface Next: Conventions Used in Book This Book Audience This book was designed to be used by anyone who needs to develop Oracle-based applications using the PL/SQL programming language. There are a number of distinct audiences: Role How to Use the Book Information systems manager The application development or database administration manager in an Oracle shop needs a thorough grasp of the technology used in the development groups. Familiarity with the technology will help the manager to better understand the challenges faced by the team members and the ability of that team to solve problems. These managers will want to pay particular attention to Part 4, for the big picture of structuring PL/SQL-based applications. One-person information systems shop Oracle licenses are frequently sold into small companies or departments where the supporting information systems organization consists of little more than a single manager and single developer (or perhaps both of those functions rolled into one). These small organizations do not have the time to search through multiple manuals or sets of training notes to find the solution to their problems. This book offers one-stop shopping for these people -- a consolidated reference and solutions source. Please purchase PDF Split-Merge on to remove this watermark.
  7. Database administrator The DBA in the world of Oracle7 needs to build database triggers and stored procedures in order to manage business rules at the RDBMS levels and implement distributed databases. The DBA will use this book to strengthen his or her understanding of how to write efficient RDBMS-level objects. This book will also discuss constructing packages of related objects which will reduce the resources required to maintain these objects. New developer in the Oracle Many developers arrive fresh on the Oracle scene Developer/2000 environment through the use of the new Oracle Developer/2000 tools in the Windows environment. These developers will be comfortable manipulating the various widgets in the GUI world, but will find PL/ SQL to be a strange, new partner for development. This book will quickly bring them up to speed and make them more productive users of Oracle Developer/2000 software. Experienced Oracle developer Many thousands of programmers have spent years writing, debugging, and maintaining programs written in SQL*Forms, SQL*Reportwriter, SQL*Plus, and SQL*Menu. While their PL/SQL skills have progressed to meet the needs of specific applications, most could expand both their PL/SQL knowledge and their awareness of its subtleties. In addition, as developers move into the Oracle Developer/2000 generation, PL/SQL plays a significantly more central role; the developer will have to gain new expertise to meet the demands of this change. Consultant Consultants must offer a high level of service and quality to their customers. This added value is measured in productivity and in the application of skills not currently held by the client. Consultants should find this book an invaluable aid in deepening their understanding of PL/SQL technology. Please purchase PDF Split-Merge on to remove this watermark.
  8. Previous: Structure of This Oracle PL/SQL Next: Conventions Used in Book Programming, 2nd Edition This Book Structure of This Book Book Index Conventions Used in This Book The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  9. Previous: Objectives of Preface Next: Audience This Book Structure of This Book This second edition has changed from the first edition in a number of significant ways. Before listing the individual parts of the book, I want to explain the overall restructuring. About the Second Edition We (the authors and O'Reilly & Associates) are committed to providing comprehensive, useful coverage of the PL/SQL language over the life of this language. The first edition of this book covered most of PL/SQL's features as it existed through PL/SQL Release 2.3. With the release of Oracle8, however, we faced a challenge: how do we fit all the new technologies of PL/SQL8 into Oracle PL/ SQL Programming and fill out coverage of existing elements of PL/SQL without creating a tome so unwieldy that reading the book becomes as much a physical as a mental workout? Furthermore, if we look ahead a few years, we can easily expect that Oracle will continue to roll out expanded functionality in the objects area, as well as providing new and enhanced built-in packages. Given this situation, it quickly became clear to us that it was not practical to offer a single text which covered "all things PL/SQL." Two questions then arose: what do we cut and what do we do with the stuff that we cut? The answers are as follows: q Move the package examples from the printed text to the disk. The second edition's disk offers a Windows-based interface designed by RevealNet, Inc. ( allowing you rapid access to the many utilities and samples. Now, instead of having to look through a directory listing and then using an editor to view those files, you will be able to mouse-click and drill-down your way to the topics in which you are interested. We take advantage of this interface to give you an easy way to examine the many examples of packages I built for the book. q Remove the chapter on built-in packages and expand it into a complete book. This chapter in the first edition offered lots of good information, but it was not comprehensive and simply couldn't keep growing to absorb all the new technology issuing forth from Oracle headquarters. Moving coverage of built-in packages to its own book will give us room to provide more and better information about this key element of the PL/SQL language. Please purchase PDF Split-Merge on to remove this watermark.
  10. Appendix A, What's on the Companion Disk?, of this edition of Oracle PL/SQL Programming will still provide a quick reference to the more common built-in packages. About the Contents The second edition of Oracle PL/SQL Programming is divided into seven parts: Part 1, Programming in PL/SQL Chapters 1 through 3 explain what it means to program in PL/SQL and in Oracle-based applications in general. This part of the book introduces you to the main features of the PL/ SQL language and gives you some general advice on programming habits and effective coding style. Part 2, PL/SQL Language Elements Chapters 4 through 10 describe the basic PL/SQL programming components -- variables, cursors, conditional and sequential control statements, loops, exception handlers, PL/SQL records, and PL/SQL tables. These chapters contain numerous examples, along with tips on how, when, and where to apply these programming constructs most effectively. When you complete this section of the book you will know how to apply all the constructs of the PL/SQL language. You will also be able to examine the complex requirements in your own applications and use the different parts of PL/SQL to implement those requirements. Part 3, Built-In Functions Chapters 11 through 14 present the many built-in (predefined) PL/SQL functions and procedures, which you can put to use immediately in your applications. One of the key barometers of your success with PL/SQL will be the extent to which you know how to leverage all of the capabilities that Oracle Corporation provides. (You don't want to have to reinvent the wheel when so many functions and procedures are provided for you.) Appendix C, Built-In Packages supplements Part 3 by summarizing the syntax of Oracle's built-in packages. Part 4, Modular Code Chapters 15 through 17 take you past the individual components of the PL/SQL language to explore modular construction in PL/SQL. You will learn how to build procedures, functions, and packages; more than that, you will learn how to build them correctly. More than with any other aspect of code, the way you design your modules has an enormous impact on your applications' development time, reusability, and maintainability. Part 5, New PL/SQL8 Features Chapters 18 through 21 contain the main discussion of the new features of Oracle8 -- in particular, object types, new types of collections (nested tables and VARRAYs), object views, and external procedures. Although we describe Oracle8 enhancements as appropriate in other sections of the book, we localize the major discussion here. Doing so allows developers new Please purchase PDF Split-Merge on to remove this watermark.
  11. to Oracle8 to learn about the features in a coordinated way. It also lets developers still working on Oracle7 systems to skip over much of the discussion until it is more relevant to them. Part 6, Making PL/SQL Programs Work Chapters 22 through 26 tell you how to manage your PL/SQL code and debug, tune, and trace the execution of your programs. This part of the book also contains a summary of particularly helpful tips for effective PL/SQL programming in the real world. Part 7, Appendixes Appendixes A through C summarize what's on the companion disk, how to call stored procedures from PL/SQL Version 1.1, and how to call Oracle's built-in packages. If you are new to PL/SQL, reading this book from beginning to end should improve your skills and help your understanding widen in a gradual, natural process. If you're already a proficient PL/SQL programmer, you'll probably want to dip into the appropriate sections in order to extract particular techniques for immediate application. Whether you use this book as a teaching guide or as a reference, I hope that it will have a significant impact on your ability to use PL/SQL most effectively. Long as this book is, it doesn't do everything. The Oracle environment is a huge and complex one, and in this book I've focused my attention on PL/SQL itself. Some topics are outside the logical scope of this book. Therefore, this book does not cover: q Administration of Oracle databases. While the DBA can use this book to learn how to write the PL/SQL needed to build and maintain databases, this book does not explore all the nuances of the Data Definition Language (DDL) of Oracle's SQL. q Application and database tuning. I don't cover detailed tuning issues in this book, though the second edition does add a chapter on PL/SQL tuning. Oracle Performance Tuning by Peter Corrigan and Mark Gurry (O'Reilly & Associates, Second Edition, 1997) gives you all the information you need about tuning your Oracle applications. q Oracle tool-specific technologies independent of PL/SQL. This book won't teach you everything you need to know about such technologies as SQL*Forms and Oracle Forms triggers. Similarly, you won't find detailed discussions of repeating frames of Oracle Reports in here. Nevertheless, many of the techniques offered in this book certainly do apply to the Oracle Developer/2000 environment. q Third-party application development software. There are many alternatives to using PL/SQL and the tools supplied by Oracle to build your applications. This book does not address these options, nor does it attempt to compare PL/SQL to these third-party products. q National Language Support in Oracle. This book does not offer comprehensive coverage of Oracle's National Language Support (NLS) capabilities for developing applications for multiple languages. q Trusted Oracle. Oracle Corporation has developed a special version of its Oracle7 Server for high-security environments. This book does not detail the additional datatypes and features available only for Trusted Oracle. Please purchase PDF Split-Merge on to remove this watermark.
  12. Previous: Objectives of Oracle PL/SQL Next: Audience This Book Programming, 2nd Edition Objectives of This Book Book Index Audience The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  13. Previous: Foreword Preface Next: Structure of This Book Preface Contents: Objectives of This Book Structure of This Book Audience Conventions Used in This Book Which Platform or Version? About the Disk Comments and Questions Acknowledgments Thousands of application developers and database administrators around the world use software provided by Oracle Corporation to build complex systems that manage vast quantities of data. At the heart of much of Oracle's software is PL/SQL -- a programming language that provides procedural extensions to the SQL relational database language and an ever-growing range of Oracle development tools. PL/SQL figures prominently as an enabling technology in almost every new product released by Oracle Corporation. Developers can use PL/SQL to perform many kinds of programming functions, including: q Implementing crucial business rules in the Oracle Server with PL/SQL-based stored procedures and database triggers q Enhancing powerful and easy-to-use GUI interfaces of products like Oracle Developer/2000 with detailed, programmatic control q Employing object-oriented design principles in Oracle-based applications q Linking a World Wide Web page to an Oracle database Perhaps most importantly, PL/SQL plays a crucial role in the design of successful client-server applications because it provides the foundation for the code used to distribute processing and transactions across the network. Please purchase PDF Split-Merge on to remove this watermark.
  14. PL/SQL was modeled after Ada,[1] a programming language designed for the United States Department of Defense. Ada is a high-level programming language which emphasizes data abstraction, information hiding, and other key elements of modern design strategies. [1] The language was named "Ada" in honor of Ada Lovelace, a mathematician who is regarded by many to have been the world's first computer programmer. PL/SQL is a powerful language which incorporates many of the most advanced elements of procedural languages, including: q A full range of datatypes q Explicit block structures q Conditional and sequential control statements q Loops of various kinds q Exception handlers for use in event-based error handling q Constructs that help in the development of modular code -- functions, procedures, and packages (collections of related programs and variables); packages are often referred to as "poor man's objects" q User-defined datatypes such as objects and nested tables (with the Oracle objects option) PL/SQL is integrated tightly into Oracle's SQL language: you can execute SQL statements directly from your procedural program. Conversely, you can also call PL/SQL functions from within a SQL statement. Oracle developers who want to be successful in the 1990s and beyond must learn to use PL/SQL to full advantage. This is a two-step process: first, learn how to use the language's full set of features; and second, after mastering those individual features, learn how to put these constructs together to build complex applications. How can you best learn PL/SQL? The usual way is to struggle with the software tool and, through trial and error, discover the best implementation techniques. With PL/SQL, a slow and uncertain process is made worse by several factors: q PL/SQL is still a relatively new language; there are few resources outside of Oracle manuals that will help you learn more. Classes tend to focus on the flashy side of the new GUI tools, and they ignore the more complicated programming that is so necessary in production applications. Books on Oracle technology try to cover too much territory and as a result cannot support developers as they move past the most basic requirements. q PL/SQL is just now maturing to the point where it offers and is supported by a comprehensive set of features and programmer utilities. For years, developers have complained about a lack of a debugger, the inability to read from and write to operating system files, no support for arrays, and other issues. Oracle Corporation has finally released versions of PL/SQL which address these complaints and are robust enough to support large-scale application development. To complement this robustness, third-party vendors are also beginning to offer useful programming environments. Please purchase PDF Split-Merge on to remove this watermark.
  15. q PL/SQL is an island of procedurality in a sea of declarative or "fill-in-the-form" products; you have to figure out how to blend these two different approaches when you develop your code. It is one thing to click on a button in a designer interface and create a widget. It is quite another thing to learn how to manipulate that widget and handle the event-based interactions between widgets with procedural code. For all of these reasons and more, Oracle developers need a solid, comprehensive resource for all things PL/SQL. You need to know about the basic building blocks of PL/SQL, but you also need to learn by example, so you can skip as much of the trial-and-error as possible. As with any programming language, there is a right way and many wrong ways (or at least "not as right" ways) in PL/SQL to handle just about every requirement you will meet. It's my hope that this book will help you learn how to use the PL/SQL language in the most effective and efficient way possible. Objectives of This Book What, specifically, will this book help you do? Take full advantage of PL/SQL. The reference manuals may describe all the features of the PL/SQL language, but they don't tell you how to apply the technology. In fact, in some cases, you'll be lucky to even understand how to use a given feature after you've made your way through the railroad diagrams. Books and training courses tend to cover the same standard topics in the same limited way. In this book, we'll venture beyond to the edges of the language, to the nonstandard ways in which a particular feature can be tweaked to achieve a desired result. Use PL/SQL to solve your problems. You don't spend your days and nights writing PL/SQL modules so that you can rise to a higher plane of existence. You use PL/SQL to solve problems for your company or your customers. In this book, I try hard to help you tackle real-world problems, the kinds of issues developers face on a daily basis (at least those problems that can be solved with mere software). To do this, I've packed the book with examples -- not just small code fragments, but complete application components you can apply immediately to your own situations. There is a good deal of code in the book itself, and much more on the disk that accompanies the book. In this book I guide you through the analytical process used to come up with a solution. In this way I hope you'll see, in the most concrete terms, how to apply PL/SQL features and undocumented applications of those features to a particular situation. Write efficient, maintainable code. PL/SQL and the rest of the Oracle products offer the potential for incredible development productivity. If you aren't careful, however, this rapid development capability will simply let you dig yourself into a deeper, darker hole than you've ever found yourself in before. I would consider this book a failure if it only ended up helping programmers write more code in less time than ever before. I want to help you develop the skills and techniques that give you the time to build modules which readily adapt to change and are easily understood and maintained. I want to teach you to use comprehensive strategies and code architectures which allow you to apply PL/SQL in powerful, general ways to many of the problems you will face. Please purchase PDF Split-Merge on to remove this watermark.
  16. Previous: Foreword Oracle PL/SQL Next: Structure of This Programming, 2nd Edition Book Foreword Book Index Structure of This Book The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  17. Previous: Dedication Foreword Next: Preface Foreword The world is always changing for applications developers. In the early 1990s the emphasis was on the user interface, and the demand was overwhelming for PC clients with buttons, pop-up lists, tab folders, and other fancy GUI elements. We learned Visual Basic, PowerBuilder, SQL Windows, Access, and Paradox to meet that demand, or we suffered through the evolution of the Developer/2000 tools from Oracle Corporation. We were able to create instant legacy applications in just a matter of weeks -- legacy applications with a pretty interface and some of the ugliest, undocumented, nonoptimized, spaghetti code that you have ever seen. We could quickly build unreadable, unmaintainable code with all the application logic wrapped up in the interface elements. Now it's Java, Java, Java, and more Java. Our clients want elegant multi-tier applications that run on any client from thin-client network computers to overstuffed NT workstations with hundreds of megabytes of memory, with that same instantaneous response they expected from client/server systems. Now our applications must support not hundreds of users on a local area network but thousands of users on the Internet. Oracle is even promising that you will be able to execute Java in the database server itself and write stored procedures in Java rather than PL/SQL. So why aren't we rushing off to learn Java? Because even with all of the hoopla over Java, PL/SQL is still the best way to build programs to access data in Oracle7 and Oracle8 databases. After Oracle began using PL/SQL to build its own tools for replication, the open APIs for Designer/2000 and Developer/2000, and the HTML generators, it began to pay a lot more attention to performance characteristics, and PL/SQL8 includes a number of significant enhancements to speed execution of complex PL/SQL logic. With these new improvements, PL/SQL8 assumes even more importance as the principal data access language for Oracle8. Oracle has been methodically enhancing the capabilities of PL/SQL to make it the language of choice for developing distributed computing environments. When Oracle finally delivers client-side PL/SQL with the full characteristics of server-side code (effectively turning all clients into mini-servers for certain purposes), we will be able to build truly distributed environments for maximizing the effectiveness of our limited computing resources. We already can use PL/SQL packages and procedures from most good front-end tools, and that integration should get better over time. Almost every Java-based middleware connectivity tool is being released with support for PL/SQL. That should help make it easier to build the complex rules in a portable language that we can run in most popular hardware or software environments. Please purchase PDF Split-Merge on to remove this watermark.
  18. PL/SQL is a complex and powerful programming language that you can use to build a new generation of multi-tier systems -- systems that can scale up past the department LAN to enable world-wide enterprise systems on the Internet with the same reliability that we expect from old mainframe applications. The ability to build those systems does not mean that we will be able to manage our development environments effectively. You can be sure that the tools to help us cope with the complexity of truly distributed business objects will be slower to emerge, and we will all be in pretty deep before they are really ready. We can start to get ready now as we begin to take advantage of the new power and sophistication of Oracle8's PL/SQL. We can start writing modular code that can be developed in a top-down manner with program names that truly describe their function. We can start to write PL/SQL code that we can reuse within and among our applications. We can apply the principles of good structured design to our development of PL/SQL packages, procedures, functions, etc. And we can use Oracle PL/SQL Programming as our source of the right way to write efficient and effective PL/SQL code. Many of us have already adopted Oracle PL/SQL Programming as our programming "bible." Steven's no-nonsense approach to minimizing the amount of code he needs to write and maintain; his naming conventions that maximize the documentation content of his code; his innate ability to sniff out ways to make coding PL/SQL less drudgery and more creative -- all of these characteristics should be extremely useful and inspiring to good developers. The first edition of this book is one of the very few titles in my Oracle collection of more than 70 books that is actually dog-eared from use. All of my colleagues already know the book intimately. I have known Steven Feuerstein and his work for a long time through my publishing of Oracle technical publications: the NY Oracle Users newsletter in 1989; the Oracle User Resource newsletter from 1990 to 1994; the International Oracle Users Journal from 1990 to 1992; the Proceedings of the East Coast Oracle Developers Conference from 1991 to 1996; and since 1994, Pinnacle Publishing's Oracle Developer. Steven has been my most prolific and admired writer for more than seven years. Now that Steven (with the able help of Bill Pribyl) has updated the original version of Oracle PL/ SQL Programming, I advise every Oracle developer to replace his or her own well-utilized copy with this new edition. They'll start out checking the new Oracle8 additions and the additional chapters on performance tuning, debugging, and tracing. But I think every one of them should have a copy of the new edition handy so they'll be prepared when someone comes to them with the inevitable questions about PL/SQL. Oracle8 is going to be the database behind many of the biggest systems on the Internet, and PL/SQL is going to be the language that makes it happen. The most successful Oracle developers and DBAs will be up to their ears in PL/SQL code -- and they'll be eternally grateful if that code is written in accordance with Steven and Bill's teachings. As an extra treat, you should also find the book to be readable and entertaining, not easy adjectives to apply to most technical tomes. You will enjoy this book! I did. Tony Ziemba Editor, Oracle Developer Please purchase PDF Split-Merge on to remove this watermark.
  19. New York, NY August 1997 Previous: Dedication Oracle PL/SQL Next: Preface Programming, 2nd Edition Dedication Book Index Preface The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.
  20. Dedication Next: Foreword Dedication I dedicate this book to my parents, Sheldon and Joan Feuerstein, and to the children in my life: the babies at the Columbus Maryville Reception Center, Nikolas Silva, Ian and Michaela McCauseland, Danielle and Benjamin DeUrso, Adam and Jay Bartell, Ciera, Brian, and Michael Daniels, Timnah and Masada Sela, and of course my own boys, Eli and Chris. -- Steven Feuerstein To my father, who told me "that's no hill for a stepper" enough times that it finally sank in. -- Bill Pribyl Oracle PL/SQL Next: Foreword Programming, 2nd Edition Book Index Foreword The Oracle Library Navigation Copyright (c) 2000 O'Reilly & Associates. All rights reserved. Please purchase PDF Split-Merge on to remove this watermark.



Đồng bộ tài khoản