...® OCA Oracle Database 11g: SQL Fundamentals I Exam Guide (Exam 1Z0-051) ABOUT THE AUTHORS John Watson (Oxford, UK) works for BPLC Management Consultants, teaching and consulting throughout Europe and Africa. He was with Oracle University for several years in South Africa, and before that worked for a number of companies, government departments, and NGOs in England and Europe. He is OCP qualified in both database and Application Server administration. John is the author of several books and numerous articles on technology and has 25 years of experience in IT. Roopesh Ramklass (South Africa), OCP, is an independent Oracle specialist with over 10 years of experience in a wide variety of IT environments. These include software design and development, systems analysis, courseware development, and lecturing. He has worked for Oracle Support and taught at Oracle University in South Africa for several years. Roopesh is experienced in managing and executing IT development projects, including infrastructure systems provisioning, software development, and systems integration. About the Technical Editor Bruce Swart (South Africa) works for 2Cana Solutions and has over 14 years of experience in IT. Whilst maintaining a keen interest for teaching others, he has performed several roles including developer, analyst, team leader, administrator, project manager, consultant, and lecturer. He is OCP qualified in both database and developer roles. He has taught at Oracle University...
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...Introduction to Oracle9i: SQL Instructor Guide • Volume 1 40049GC11 Production 1.1 October 2001 D33993 Authors Copyright © Oracle Corporation, 2000, 2001. All rights reserved. Nancy Greenberg Priya Nathan This documentation contains proprietary information of Oracle Corporation. It is provided under a license agreement containing restrictions on use and disclosure and is also protected by copyright law. Reverse engineering of the software is prohibited. If this documentation is delivered to a U.S. Government Agency of the Department of Defense, then it is delivered with Restricted Rights and the following legend is applicable: Technical Contributors and Reviewers Josephine Turner Martin Alvarez Anna Atkinson Don Bates Marco Berbeek Andrew Brannigan Restricted Rights Legend Use, duplication or disclosure by the Government is subject to restrictions for commercial computer software and shall be deemed to be Restricted Rights software under Federal law, as set forth in subparagraph (c)(1)(ii) of DFARS 252.227-7013, Rights in Technical Data and Computer Software (October 1988). This material or any portion of it may not be copied in any form or by any means without the express prior written permission of Oracle Corporation. Any other copying is a violation of copyright law and may result in civil and/or criminal penalties. Laszlo Czinkoczki Michael Gerlach Sharon Gray Rosita Hanoman Mozhe Jalali Sarah Jones Charbel Khouri ...
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...Introduction to Oracle9i: SQL Instructor Guide • Volume 1 40049GC11 Production 1.1 October 2001 D33993 Authors Nancy Greenberg Priya Nathan Copyright © Oracle Corporation, 2000, 2001. All rights reserved. This documentation contains proprietary information of Oracle Corporation. It is provided under a license agreement containing restrictions on use and disclosure and is also protected by copyright law. Reverse engineering of the software is prohibited. If this documentation is delivered to a U.S. Government Agency of the Department of Defense, then it is delivered with Restricted Rights and the following legend is applicable: Restricted Rights Legend Use, duplication or disclosure by the Government is subject to restrictions for commercial computer software and shall be deemed to be Restricted Rights software under Federal law, as set forth in subparagraph (c)(1)(ii) of DFARS 252.227-7013, Rights in Technical Data and Computer Software (October 1988). This material or any portion of it may not be copied in any form or by any means without the express prior written permission of Oracle Corporation. Any other copying is a violation of copyright law and may result in civil and/or criminal penalties. If this documentation is delivered to a U.S. Government Agency not within the Department of Defense, then it is delivered with “Restricted Rights,” as defined in FAR 52.227-14, Rights in Data-General, including Alternate III (June 1987). The information in this document...
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...A Practical Introduction to Data Structures and Algorithm Analysis Third Edition (Java) Clifford A. Shaffer Department of Computer Science Virginia Tech Blacksburg, VA 24061 April 16, 2009 Copyright c 2008 by Clifford A. Shaffer. This document is the draft of a book to be published by Prentice Hall and may not be duplicated without the express written consent of either the author or a representative of the publisher. Contents Preface xiii I Preliminaries 1 1 Data Structures and Algorithms 1.1 A Philosophy of Data Structures 1.1.1 The Need for Data Structures 1.1.2 Costs and Benefits 1.2 Abstract Data Types and Data Structures 1.3 Design Patterns 1.3.1 Flyweight 1.3.2 Visitor 1.3.3 Composite 1.3.4 Strategy 1.4 Problems, Algorithms, and Programs 1.5 Further Reading 1.6 Exercises 3 4 4 6 8 12 13 14 15 16 17 19 21 2 Mathematical Preliminaries 2.1 Sets and Relations 2.2 Miscellaneous Notation 2.3 Logarithms 2.4 Summations and Recurrences 25 25 29 31 33 iii iv Contents 2.5 2.6 2.7 2.8 2.9 3 II 4 Recursion Mathematical Proof Techniques 2.6.1 Direct Proof 2.6.2 Proof by Contradiction 2.6.3 Proof by Mathematical Induction Estimating Further Reading Exercises Algorithm Analysis 3.1 Introduction 3.2 Best, Worst, and Average Cases 3.3 A Faster Computer, or a Faster Algorithm? 3.4 Asymptotic Analysis 3.4.1 Upper Bounds 3.4.2 Lower Bounds 3.4.3 Θ Notation 3.4.4 Simplifying...
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...i Computational Complexity: A Modern Approach Draft of a book: Dated January 2007 Comments welcome! Sanjeev Arora and Boaz Barak Princeton University complexitybook@gmail.com Not to be reproduced or distributed without the authors’ permission This is an Internet draft. Some chapters are more finished than others. References and attributions are very preliminary and we apologize in advance for any omissions (but hope you will nevertheless point them out to us). Please send us bugs, typos, missing references or general comments to complexitybook@gmail.com — Thank You!! DRAFT ii DRAFT About this book Computational complexity theory has developed rapidly in the past three decades. The list of surprising and fundamental results proved since 1990 alone could fill a book: these include new probabilistic definitions of classical complexity classes (IP = PSPACE and the PCP Theorems) and their implications for the field of approximation algorithms; Shor’s algorithm to factor integers using a quantum computer; an understanding of why current approaches to the famous P versus NP will not be successful; a theory of derandomization and pseudorandomness based upon computational hardness; and beautiful constructions of pseudorandom objects such as extractors and expanders. This book aims to describe such recent achievements of complexity theory in the context of the classical results. It is intended to both serve as a textbook as a reference for self-study. This means...
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...commodity machines and is highly scalable: a typical MapReduce computation processes many terabytes of data on thousands of machines. Programmers find the system easy to use: hundreds of MapReduce programs have been implemented and upwards of one thousand MapReduce jobs are executed on Google’s clusters every day. 1 Introduction Over the past five years, the authors and many others at Google have implemented hundreds of special-purpose computations that process large amounts of raw data, such as crawled documents, web request logs, etc., to compute various kinds of derived data, such as inverted indices, various representations of the graph structure of web documents, summaries of the number of pages crawled per host, the set of most frequent queries in a To appear in OSDI...
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...Teach Yourself SQL in 21 Days, Second Edition Table of Contents: Introduction Week 1 at a Glance Day 1 Introduction to SQL Day 2 Introduction to the Query: The SELECT Statement Day 3 Expressions, Conditions, and Operators Day 4 Functions: Molding the Data You Retrieve Day 5 Clauses in SQL Day 6 Joining Tables Day 7 Subqueries: The Embedded SELECT Statement Week 1 in Review Week 2 at a Glance Day 8 Manipulating Data Day 9 Creating and Maintaining Tables Day 10 Creating Views and Indexes Day 11 Controlling Transactions Day 12 Database Security Day 13 Advanced SQL Topics Day 14 Dynamic Uses of SQL Week 2 in Review Week 3 at a Glance Day 15 Streamlining SQL Statements for Improved Performance Day 16 Using Views to Retrieve Useful Information from the Data Dictionary Day 17 Using SQL to Generate SQL Statements Day 18 PL/SQL: An Introduction Day 19 Transact-SQL: An Introduction Day 20 SQL*Plus Day 21 Common SQL Mistakes/Errors and Resolutions Week 3 in Review Appendixes A Glossary of Common SQL Statements B Source Code Listings for the C++ Program Used on Day 14 C Source Code Listings for the Delphi Program Used on Day 14 D Resources E ASCII Table F Answers to Quizzes and Excercises / Copyright, Macmillan Computer Publishing. All rights reserved. Join the National Guard Car Computer Serve in your own backyard Get Free Info Here. No Obligation www.military.com Complete Diagnostic Software Tool DTC Codes, Sensor Readings...
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...Contents Preface 1 Chapter 1 Introduction Exercises 4 Chapter 2 Entity Relationship Model Exercises 9 Chapter 3 Relational Model Exercises 30 Chapter 4 SQL Exercises 42 Chapter 5 Other Relational Languages Exercises 58 Chapter 6 Integrity and Security Exercises 74 iii iv Contents Chapter 7 Relational-Database Design Exercises 84 Chapter 8 Object-Oriented Databases Exercises 98 Chapter 9 Object-Relational Databases Exercises 109 Chapter 10 XML Exercises 119 Chapter 11 Storage and File Structure Exercises 129 Chapter 12 Indexing and Hashing Exercises 141 Chapter 13 Query Processing Exercises 155 Chapter 14 Query Optimization Exercises 166 Chapter 15 Transactions Exercises 175 Chapter 16 Concurrency Control Exercises 182 Chapter 17 Recovery System Exercises 194 Contents v Chapter 18 Database System Architectures Exercises 201 Chapter 19 Distributed Databases Exercises 208 Chapter 20 Parallel Databases Exercises 217 Chapter 21 Application Development and Administration Exercises 225 Chapter 22 Advanced Querying and Information Retrieval Exercises 232 Chapter 23 Advanced Data Types and New Applications Exercises 241 Chapter 24 Advanced Transaction Processing Exercises 249 C H A P T E R 1 Introduction Chapter 1 provides a general overview of the nature and purpose of database systems. The most important concept in...
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...Some Problems in Symmetric and Asymmetric Cryptography A thesis submitted for the partial fulfillment of the degree of Doctor of Philosophy in Mathematics By SANTOSH KUMAR YADAV Under the supervision of Prof. Sunder Lal and Prof. S. C. Arora DEPARTMENT OF MATHEMATICS DR. B. R. AMBEDKAR UNIVERSITY, AGRA (FORMERLY AGRA UNIVERSITY) 2010 *Sanskrit verse dating back to the pre-Christian era Dedicated to my Teachers, Friends, Students and Family Members DECLARATION I do hereby declare that the present research work has been carried out by me under the supervision of Prof. Sunder Lal and Prof. S. C. Arora. This work has not been submitted elsewhere for any other degree, diploma, fellowship or any other similar title. Santosh Kumar Yadav Research Scholar CERTIFICATE This is to certify that the thesis entitled “Some Problems in Symmetric and Asymmetric Cryptography” submitted to Dr. B.R.Ambedkar University, Agra for the degree of Doctor of Philosophy by Mr. Santosh Kumar Yadav, is a bonafide record of research work done by him under our supervision. To the best of our knowledge, this thesis has not previously formed the basis for the award to any candidate of any degree, diploma, fellowship or any other similar title and the work has not been submitted to any university or institution, for the award of any other degree. S. C. ARORA SUNDER LAL (Co-supervisor) (Supervisor) Professor Professor of Mathematics, and Department of Mathematics Pro-Vice Chancellor ...
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...Teach Yourself SQL in 21 Days, Second Edition Table of Contents: Introduction Week 1 at a Glance Day 1 Introduction to SQL Day 2 Introduction to the Query: The SELECT Statement Day 3 Expressions, Conditions, and Operators Day 4 Functions: Molding the Data You Retrieve Day 5 Clauses in SQL Day 6 Joining Tables Day 7 Subqueries: The Embedded SELECT Statement Week 1 in Review Week 2 at a Glance Day 8 Manipulating Data Day 9 Creating and Maintaining Tables Day 10 Creating Views and Indexes Day 11 Controlling Transactions Day 12 Database Security Day 13 Advanced SQL Topics Day 14 Dynamic Uses of SQL Week 2 in Review Week 3 at a Glance Day 15 Streamlining SQL Statements for Improved Performance Day 16 Using Views to Retrieve Useful Information from the Data Dictionary Day 17 Using SQL to Generate SQL Statements Day 18 PL/SQL: An Introduction Day 19 Transact-SQL: An Introduction Day 20 SQL*Plus Day 21 Common SQL Mistakes/Errors and Resolutions Week 3 in Review Appendixes A Glossary of Common SQL Statements B Source Code Listings for the C++ Program Used on Day 14 C Source Code Listings for the Delphi Program Used on Day 14 D Resources E ASCII Table F Answers to Quizzes and Excercises © Copyright, Macmillan Computer Publishing. All rights reserved. Teach Yourself SQL in 21 Days, Second Edition Acknowledgments A special thanks to the following individuals: foremost to my loving wife, Tina, for her tolerance and endless support, to Dan Wilson for his...
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...dwqwdlqkdmqwkldnqwkldnwkdnwqdldkwd Solutions To Workshop Exercises Chapter 1: SQL and Data 4 Chapter 2: SQL: The Basics 13 Chapter 3: The WHERE and ORDER BY Clauses 20 Chapter 4: Character, Number, and Miscellaneous Functions 27 Chapter 5: Date and Conversion Functions 42 Chapter 6: Aggregate Functions, GROUP BY and HAVING 57 Chapter 7: Equijoins 73 Chapter 8: Subqueries 108 Chapter 9: Set Operators 126 Chapter 10: Complex Joins 137 Chapter 11: Insert, Update, and Delete 164 Chapter 12: Create, Alter, and Drop Tables 178 Chapter 13: Indexes, Sequences, and Views 188 Chapter 14: The Data Dictionary, Scripting, and Reporting 197 Chapter 15: Security 213 Chapter 16: Regular Expressions and Hierarchical Queries 222 Chapter 17: Exploring Data Warehousing Features 235 Chapter 18: SQL Optimization 248 Chapter 1: SQL and Data In this chapter, you learned about data, how data is organized in tables, and how the relationships among the tables are depicted in a schema diagram. Based on your newly acquired knowledge, design a schema diagram based on the fictional ACME Construction Company. Draw on your own work experience to design the following components. 1. Draw boxes for these three tables: EMPLOYEE, POSITION, and DEPARTMENT. Solution: See the solution for Exercise 3. 2. Create at least three columns for each of the tables and designate a primary key for each table. Solution: See the solution for Exercise 3. 3. Create relationships among the...
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...CHAPTER 6 Introduction to SQL LEARNING OBJECTIVES After studying this chapter, you should be able to: ■ Concisely define each of the following key terms: relational DBMS (RDBMS), catalog, schema, data definition language (DDL), data manipulation language (DML), data control language (DCL), scalar aggregate, vector aggregate, base table, virtual table, dynamic view, and materialized view. ■ ■ ■ ■ ■ Visit www.pearsonhighered.com/ hoffer to view the accompanying video for this chapter. Interpret the history and role of SQL in database development. Define a database using the SQL data definition language. Write single-table queries using SQL commands. Establish referential integrity using SQL. Discuss the SQL:1999 and SQL:2008 standards. INTRODUCTION Pronounced “S-Q-L” by some and “sequel” by others, SQL has become the de facto standard language for creating and querying relational databases. (Can the next standard be the sequel to SQL?) The primary purpose of this chapter is to introduce SQL, the most common language for relational systems. It has been accepted as a U.S. standard by the American National Standards Institute (ANSI) and is a Federal Information Processing Standard (FIPS). It is also an international standard recognized by the International Organization for Standardization (ISO). ANSI has accredited the International Committee for Information Technology Standards (INCITS) as a standards development organization; INCITS is working on the next version...
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...Learning C# 3.0 Other resources from O’Reilly Related titles oreilly.com C# 3.0 Cookbook™ C# 3.0 Design Patterns C# 3.0 in a Nutshell Programming ASP.NET 3.5 Programming C# 3.0 Programming .NET 3.5 Programming WCF Services Programming WPF oreilly.com is more than a complete catalog of O’Reilly books. You’ll also find links to news, events, articles, weblogs, sample chapters, and code examples. oreillynet.com is the essential portal for developers interested in open and emerging technologies, including new platforms, programming languages, and operating systems. Conferences O’Reilly brings diverse innovators together to nurture the ideas that spark revolutionary industries. We specialize in documenting the latest tools and systems, translating the innovator’s knowledge into useful skills for those in the trenches. Visit conferences.oreilly.com for our upcoming events. Safari Bookshelf (safari.oreilly.com) is the premier online reference library for programmers and IT professionals. Conduct searches across more than 1,000 books. Subscribers can zero in on answers to time-critical questions in a matter of seconds. Read the books on your Bookshelf from cover to cover or simply flip to the page you need. Try it today for free. Learning C# 3.0 Jesse Liberty and Brian MacDonald Beijing • Cambridge • Farnham • Köln • Sebastopol • Taipei • Tokyo Learning C# 3.0 by Jesse Liberty and Brian MacDonald Copyright © 2009 Jesse Liberty and...
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...1 2 Acknowledgements p.1 tr ©iStockphoto.com/Dennys Bisogno, etc t = top, b = bottom, l = left, r = right, c = centre Computer hardware and software brand names mentioned in this book are protected by their respective trademarks and are acknowledged. Scratch is developed by the Lifelong Kindergarten Group at the MIT Media Lab. See http://scratch.mit.edu Every effort has been made to trace all copyright holders, but if any have been inadvertently overlooked the publishers will be pleased to make the necessary arrangements at the first opportunity. Although every effort has been made to ensure that website addresses are correct at time of going to press, Hodder Education cannot be held responsible for the content of any website mentioned in this book. It is sometimes possible to find a relocated web page by typing in the address of the home page for a website in the URL window of your browser. Photo credits p.1 © peno – Fotolia; p.15 © Dmitrydesigner/Fotolia; p.16 ©iStockphoto.com/Karl Yamashita; p.57 © Romanchuck – Fotolia; p.58 t © C Squared Studios/Photodisc/Getty Images, m ©Dmitriy Melnikov - Fotolia.com, b © Popova Olga/Fotolia; p.59 © picsfive – Fotolia; p.65 © Manfred Schmidt – Fotolia.com; p.67 © dja65 – Fotolia; p.68 © Konstantin Shevtsov – Fotolia; p.69 t © Miguel Navarro/Stone/Getty Images, b © Piero Cruciatti/Alamy; p.73 © Jamdesign/Fotolia; p.78 and 79 © adisa – Fotolia; p.81 © Mykola Mazuryk – Fotolia; p.82 t © Mauro Rodrigues/Fotolia...
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...Fundamentals of Database Systems Preface....................................................................................................................................................12 Contents of This Edition.....................................................................................................................13 Guidelines for Using This Book.........................................................................................................14 Acknowledgments ..............................................................................................................................15 Contents of This Edition.........................................................................................................................17 Guidelines for Using This Book.............................................................................................................19 Acknowledgments ..................................................................................................................................21 About the Authors ..................................................................................................................................22 Part 1: Basic Concepts............................................................................................................................23 Chapter 1: Databases and Database Users..........................................................................................23 ...
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