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Books > Computing & IT > Applications of computing > Databases

Database Systems - Design, Implementation, & Management (Hardcover, 12th edition): Steven Morris, Carlos Coronel Database Systems - Design, Implementation, & Management (Hardcover, 12th edition)
Steven Morris, Carlos Coronel 2
R813 R702 Discovery Miles 7 020 Save R111 (14%) Shipped within 8 - 13 working days

Gain a solid foundation in database design and implementation with the practical and easy-to-understand approach in DATABASE SYSTEMS: DESIGN, IMPLEMENTATION, AND MANAGEMENT, 12E. Filled with diagrams, illustrations, and tables, this market-leading text provides in-depth coverage of database design. You learn the key to successful database implementation: proper design of databases to fit within a larger strategic view of the data environment. Renowned for its clear, straightforward writing style, this text provides an outstanding balance of theory and practice. You gain the hands-on skills to make you attractive to employers. Updates include the latest coverage of cloud data services and a new chapter on Big Data Analytics and NoSQL, including related Hadoop technologies. In addition, new review questions, problem sets, and cases offer multiple opportunities to test your understanding and develop useful design skills.

A Guide To SQL (Paperback, 9th edition): Philip Pratt, Mary Z Last A Guide To SQL (Paperback, 9th edition)
Philip Pratt, Mary Z Last
R732 R620 Discovery Miles 6 200 Save R112 (15%) In stock

A GUIDE TO SQL, Ninth Edition, provides an effective introduction to SQL programming using straightforward instruction, extensive hands-on exercises, and a strong foundation in real-world business applications. The Ninth Edition builds on the longstanding success of this proven text by presenting basic SQL commands in the context of a running case, in which a business uses SQL to manage orders, items, customers, and sales reps. The authors emphasize that fundamental principles and practices apply regardless of the database environment chosen, and they include examples from the latest versions of Oracle (R) and Microsoft (R) Access (R), and SQL Server throughout the text.

Database Systems - Design, Implementation, & Management (Hardcover, 13th edition): Carlos Coronel, Steven Morris Database Systems - Design, Implementation, & Management (Hardcover, 13th edition)
Carlos Coronel, Steven Morris
R811 R700 Discovery Miles 7 000 Save R111 (14%) Shipped within 8 - 13 working days

Database skills are among the most in-demand IT skills today. Now you can gain a solid foundation in database design and implementation with the practical, easy-to-understand approach in the market-leading DATABASE SYSTEMS: DESIGN, IMPLEMENTATION, AND MANAGEMENT, 13E. Diagrams, illustrations, and tables clarify in-depth coverage of database design. You learn the key to successful database implementation as you study how to properly design databases to fit within the larger strategic data environment. Clear, straightforward writing supports an outstanding balance of theory and practice with hands-on skills today's employers want. Revised SQL coverage offers more SQL examples and simpler explanations that focus on the areas most important for a database career. More coverage of Big Data Analytics and NoSQL, including related Hadoop technologies, now provides a stronger hands-on approach.

Database Principles - Fundamentals of Design, Implementations and Management (with CourseMate and eBook Access Card)... Database Principles - Fundamentals of Design, Implementations and Management (with CourseMate and eBook Access Card) (Paperback, 2nd edition)
Peter Rob, Steven Morris, Carlos Coronel, Keeley Crockett
R740 R637 Discovery Miles 6 370 Save R103 (14%) In stock

The second edition of Database Systems maintains its engaging writing style and brevity; its unique balance between theory and practice and its wealth of examples throughout the text; inspiring student-friendly learning at its best. The international edition provides a solid and practical foundation for the design, implementation and management of database systems. This foundation is built on the notion that, while databases are very practical things, their successful creation depends on understanding the important concepts that define them. The new edition has been updated with all the latest developments and technologies and incorporates a generous number of localised and motivating business vignettes that tie the concepts to real-life situations. This edition is suitable for a first course in databases at undergraduate level and will also provide essential material for conversion postgraduate courses. Providing comprehensive and practical coverage of core database concepts, it is an ideal text not only for those studying database management systems in the context of computer science, but also those on courses in the areas of information systems and business information technology. This textbook also comes packaged with a fully tailored CourseMate and an Instructor's website will also be available to adopters.

Database Principles - Fundamentals of Design, Implementation, and Management, International Edition (with Essential Resources... Database Principles - Fundamentals of Design, Implementation, and Management, International Edition (with Essential Resources Site Printed Access Card) (Paperback, 10th edition)
Stephen Morris, Peter Rob, Carlos Coronel
R833 R713 Discovery Miles 7 130 Save R120 (14%) Shipped within 8 - 13 working days

Practical and easy to understand Database Principles: Fundamentals of Design, Implementation, and Management, 10/e, International Edition gives readers a solid foundation in database design and implementation. Filled with visual aids such as diagrams, illustrations, and tables, this market-leading book provides in-depth coverage of database design, demonstrating that the key to successful database implementation is in proper design of databases to fit within a larger strategic view of the data environment. Renowned for its clear, straightforward writing style, the tenth edition has been thoroughly updated to include hot topics such as green computing/sustainability for modern data centers, the role of redundant relationships, and examples of web-database connectivity and code security. In addition, new review questions, problem sets, and cases have been added throughout the book so that readers have multiple opportunities to test their understanding and develop real and useful design skills.

Guide to Network Defense and Countermeasures, International Edition (Paperback, 3rd edition): Randy Weaver, Dean Farwood, Dawn... Guide to Network Defense and Countermeasures, International Edition (Paperback, 3rd edition)
Randy Weaver, Dean Farwood, Dawn Weaver
R978 R824 Discovery Miles 8 240 Save R154 (16%) Shipped within 8 - 13 working days

GUIDE TO NETWORK DEFENSE AND COUNTERMEASURES provides a thorough guide to perimeter defense fundamentals, including intrusion detection and firewalls. This trusted text also covers more advanced topics such as security policies, network address translation (NAT), packet filtering and analysis, proxy servers, virtual private networks (VPN), and network traffic signatures. Thoroughly updated, the new third edition reflects the latest technology, trends, and techniques including virtualization, VMware, IPv6, and ICMPv6 structure, making it easier for current and aspiring professionals to stay on the cutting edge and one step ahead of potential security threats. A clear writing style and numerous screenshots and illustrations make even complex technical material easier to understand, while tips, activities, and projects throughout the text allow you to hone your skills by applying what you learn. Perfect for students and professionals alike in this high-demand, fast-growing field, GUIDE TO NETWORK DEFENSE AND COUNTERMEASURES, Third Edition, is a must-have resource for success as a network security professional.

Database Principles - Fundamentals of Design, Implementations and Management (with CourseMate and eBook Access Card)... Database Principles - Fundamentals of Design, Implementations and Management (with CourseMate and eBook Access Card) (Paperback, 2nd edition)
Peter Rob, Steven Morris, Carlos Coronel, Keeley Crockett
R1,528 Discovery Miles 15 280 Shipped within 7 - 12 working days

The second edition of Database Principles maintains its engaging writing style and brevity; its unique balance between theory and practice and its wealth of examples throughout the text; inspiring student-friendly learning at its best. The international edition provides a solid and practical foundation for the design, implementation and management of database systems. This foundation is built on the notion that, while databases are very practical things, their successful creation depends on understanding the important concepts that define them. The new edition has been updated with all the latest developments and technologies and incorporates a generous number of localised and motivating business vignettes that tie the concepts to real-life situations. This edition is suitable for a first course in databases at undergraduate level and will also provide essential material for conversion postgraduate courses. Providing comprehensive and practical coverage of core database concepts, it is an ideal text not only for those studying database management systems in the context of computer science, but also those on courses in the areas of information systems and business information technology. This textbook also comes packaged with a fully tailored CourseMate and an Instructor's website will also be available to adopters.

Outside Insight - Navigating a World Drowning in Data (Hardcover): Jorn Lyseggen Outside Insight - Navigating a World Drowning in Data (Hardcover)
Jorn Lyseggen 1
R465 R314 Discovery Miles 3 140 Save R151 (32%) Shipped within 7 - 12 working days

Is your business looking out? The world today is drowning in data. There is a treasure trove of valuable and underutilized insights that can be gleaned from information companies and people leave behind on the internet - our 'digital breadcrumbs' - from job postings, to online news, social media, online ad spend, patent applications and more. As a result, we're at the cusp of a major shift in the way businesses are managed and governed - moving from a focus solely on lagging, internal data, toward analyses that also encompass industry-wide, external data to paint a more complete picture of a brand's opportunities and threats and uncover forward-looking insights, in real time. Tomorrow's most successful brands are already embracing Outside Insight, benefitting from an information advantage while their competition is left behind. Drawing on practical examples of transformative, data-led decisions made by brands like Apple, Facebook, Barack Obama and many more, in Outside Insight, Meltwater CEO Jorn Lyseggen illustrates the future of corporate decision-making and offers a detailed plan for business leaders to implement Outside Insight thinking into their company mindset and processes.

Blockchain For Dummies (Paperback, 2nd Edition): Tiana Laurence Blockchain For Dummies (Paperback, 2nd Edition)
Tiana Laurence 1
R572 R339 Discovery Miles 3 390 Save R233 (41%) Shipped within 7 - 12 working days

Unravel the mysteries of blockchains Blockchain technologies are disrupting some of the world's biggest industries. Blockchain For Dummies provides a fast way to catch up with the essentials of this quickly evolving tech. Written by an author involved in founding and analyzing blockchain solutions, this book serves to help those who need to understand what a blockchain can do (and can't do). This revised edition walks you through how a blockchainsecurely records data across independent networks. It offers a tour of some of the world's best-known blockchains, including those that power Bitcoin and other cryptocurrencies. It also provides a glance at how blockchain solutions are affecting the worlds of finance, supply chain management, insurance, and governments. Get a clear picture of what a blockchain can do Learn how blockchains rule cryptocurrency and smart contracts Discover current blockchains and how each of them work Test blockchain apps Blockchain has become the critical buzzword in the world of financial technology and transaction security -- and now you can make sense of it with the help of this essential guide.

NoSQL For Dummies (Paperback): Adam Fowler NoSQL For Dummies (Paperback)
Adam Fowler
R581 R394 Discovery Miles 3 940 Save R187 (32%) Shipped within 7 - 12 working days

Get up to speed on the nuances of NoSQL databases and what they mean for your organization This easy to read guide to NoSQL databases provides the type of no-nonsense overview and analysis that you need to learn, including what NoSQL is and which database is right for you. Featuring specific evaluation criteria for NoSQL databases, along with a look into the pros and cons of the most popular options, NoSQL For Dummies provides the fastest and easiest way to dive into the details of this incredible technology. You'll gain an understanding of how to use NoSQL databases for mission-critical enterprise architectures and projects, and real-world examples reinforce the primary points to create an action-oriented resource for IT pros. If you're planning a big data project or platform, you probably already know you need to select a NoSQL database to complete your architecture. But with options flooding the market and updates and add-ons coming at a rapid pace, determining what you require now, and in the future, can be a tall task. This is where NoSQL For Dummies comes in! Learn the basic tenets of NoSQL databases and why they have come to the forefront as data has outpaced the capabilities of relational databases Discover major players among NoSQL databases, including Cassandra, MongoDB, MarkLogic, Neo4J, and others Get an in-depth look at the benefits and disadvantages of the wide variety of NoSQL database options Explore the needs of your organization as they relate to the capabilities of specific NoSQL databases Big data and Hadoop get all the attention, but when it comes down to it, NoSQL databases are the engines that power many big data analytics initiatives. With NoSQL For Dummies, you'll go beyond relational databases to ramp up your enterprise's data architecture in no time.

Oracle Database 10g PL/SQL 101 (Paperback): Christopher Allen Oracle Database 10g PL/SQL 101 (Paperback)
Christopher Allen
R858 R659 Discovery Miles 6 590 Save R199 (23%) Shipped within 7 - 11 working days

Get The Ins-and-Outs of SQL and PL/SQL From an Oracle Expert.

Perform database functions quickly and easily using the comprehensive information in this step-by-step guide. Oracle professional Christopher Allen begins with database basics and progresses to plain-language explanations and real-world examples of SQL statements and PL/SQL programs. Youll learn how to manage, query, and manipulate data, use SQL*Plus, create SQL functions, and write practical PL/SQL applications. Review questions, chapter summaries, and hands-on projects will have you understanding and exploiting the powerful features of Oracle Database 10"g" in no time.. . Create tables, rows, records, columns, and fields. Store text, numbers, dates, pictures, and soundfiles in tables and columns. Define, manipulate, retrieve, and delete data, using SQL commands. Select, sort, and filter records with SQL functions and procedures. Write SQL commands to declare variables using anchored types . Use SAVEPOINT and ROLLBACK commands to ensure multilevel undo. Perform time-based and hierarchical data queries. Edit and reuse commands in script files, using the SQL*Plus program . Use PL/SQL views, sequences, procedures, functions, and packages . Use triggers to automate auditing, security, and maintenance tasks. .

BTEC Nationals Information Technology Student Book + Activebook - For the 2016 specifications (Paperback): Jenny Phillips, Alan... BTEC Nationals Information Technology Student Book + Activebook - For the 2016 specifications (Paperback)
Jenny Phillips, Alan Jarvis, Mark Fishpool, Richard McGill, Tim Cook, …
R718 Discovery Miles 7 180 Shipped within 7 - 11 working days

Each Student Book and ActiveBook have has clearly laid out pages with a range of supportive features to aid learning and teaching: Getting to know your unit sections ensure learners understand the grading criteria and unit requirements. Getting ready for Assessment sections focus on preparation for external assessment with guidance for learners on what to expect. Hints and tips will help them prepare for assessment and sample answers are provided for a range of question types including, short and long answer questions, all with a supporting commentary. Learners can also prepare for internal assessment using this feature. A case study of a learner completing the internal assessment for that unit covering 'How I got started', 'How I brought it all together' and 'What I got from the experience'. Pause Point feature provide opportunities for learners to self-evaluate their learning at regular intervals. Each Pause Point point feature gives learners a Hint or Extend option to either revisit and reinforce the topic or to encourage independent research or study skills. Case Study and Theory into Practice features enable development of problem-solving skills and place the theory into real life situations learners could encounter. Assessment Activity/Practice provide scaffolded assessment practice activities that help prepare learners for assessment. Within each assessment practice activity, a Plan, Do and Review section supports learners' formative assessment by making sure they fully understand what they are being asked to do, what their goals are and how to evaluate the task and consider how they could improve. Dedicated Think Future pages provide case studies from the industry, with a focus on aspects of skills development that can be put into practice in a real work environment and further study.

Cognitive (Internet of) Things - Collaboration to Optimize Action (Hardcover, 1st ed. 2016): Arvind Sathi Cognitive (Internet of) Things - Collaboration to Optimize Action (Hardcover, 1st ed. 2016)
Arvind Sathi
R747 R507 Discovery Miles 5 070 Save R240 (32%) Shipped within 7 - 12 working days

This book explores cognitive behavior among Internet of Things. Using a series of current and futuristic examples - appliances, personal assistants, robots, driverless cars, customer care, engineering, monetization, and many more - the book covers use cases, technology and communication aspects of how machines will support individuals and organizations. This book examines the Cognitive Things covering a number of important questions: * What are Cognitive Things? * What applications can be driven from Cognitive Things - today and tomorrow? * How will these Cognitive Things collaborate with each and other, with individuals and with organizations? * What is the cognitive era? How is it different from the automation era? * How will the Cognitive Things support or accelerate human problem solving? * Which technical components make up cognitive behavior? * How does it redistribute the work-load between humans and machines? * What types of data can be collected from them and shared with external organizations? * How do they recognize and authenticate authorized users? How is the data safeguarded from potential theft? Who owns the data and how are the data ownership rights enforced? Overall, Sathi explores ways in which Cognitive Things bring value to individuals as well as organizations and how to integrate the use of the devices into changing organizational structures. Case studies are used throughout to illustrate how innovators are already benefiting from the initial explosion of devices and data. Business executives, operational managers, and IT professionals will understand the fundamental changes required to fully benefit from cognitive technologies and how to utilize them for their own success.

Digital Watermarking and Steganography - Fundamentals and Techniques (Hardcover): Frank Y. Shih Digital Watermarking and Steganography - Fundamentals and Techniques (Hardcover)
Frank Y. Shih
R1,687 Discovery Miles 16 870 Shipped within 7 - 12 working days

Every day millions of people capture, store, transmit, and manipulate digital data. Unfortunately free access digital multimedia communication also provides virtually unprecedented opportunities to pirate copyrighted material. Providing the theoretical background needed to develop and implement advanced techniques and algorithms, Digital Watermarking and Steganography-

- Demonstrates how to develop and implement methods to guarantee the authenticity of digital media

- Explains the categorization of digital watermarking techniques based on characteristics as well as applications

- Presents cutting-edge techniques such as the GA-based breaking algorithm on the frequency-domain steganalytic system.

The popularity of digital media continues to soar. The theoretical foundation presented within this valuable reference will facilitate the creation on new techniques and algorithms to combat present and potential threats against information security.

Data Mining For Dummies (Paperback): Meta S. Brown Data Mining For Dummies (Paperback)
Meta S. Brown
R623 R418 Discovery Miles 4 180 Save R205 (33%) Shipped within 7 - 12 working days

Delve into your data for the key to success Data mining is quickly becoming integral to creating value and business momentum. The ability to detect unseen patterns hidden in the numbers exhaustively generated by day-to-day operations allows savvy decision-makers to exploit every tool at their disposal in the pursuit of better business. By creating models and testing whether patterns hold up, it is possible to discover new intelligence that could change your business's entire paradigm for a more successful outcome. Data Mining for Dummies shows you why it doesn't take a data scientist to gain this advantage, and empowers average business people to start shaping a process relevant to their business's needs. In this book, you'll learn the hows and whys of mining to the depths of your data, and how to make the case for heavier investment into data mining capabilities. The book explains the details of the knowledge discovery process including: * Model creation, validity testing, and interpretation * Effective communication of findings * Available tools, both paid and open-source * Data selection, transformation, and evaluation Data Mining for Dummies takes you step-by-step through a real-world data-mining project using open-source tools that allow you to get immediate hands-on experience working with large amounts of data. You'll gain the confidence you need to start making data mining practices a routine part of your successful business. If you're serious about doing everything you can to push your company to the top, Data Mining for Dummies is your ticket to effective data mining.

Introduction to Information Systems (Paperback, 5th Edition International Student Version): R.Kelly Rainer, Brad Prince, Casey... Introduction to Information Systems (Paperback, 5th Edition International Student Version)
R.Kelly Rainer, Brad Prince, Casey G. Cegielski
R1,052 R879 Discovery Miles 8 790 Save R173 (16%) Shipped within 7 - 13 working days

The goal of Rainer, Introduction to Information Systems 5e is to teach all business majors, especially undergraduate ones, how to use information technology to master their current or future jobs and to help ensure the success of their organization. To accomplish this goal, this text helps students to become informed users; that is, persons knowledgeable about information systems and information technology. The focus is not on merely learning the concepts of IT but rather on applying those concepts to facilitate business processes. The content concentrate on placing information systems in the context of business, so that students will more readily grasp the concepts presented in the text. The theme of this book is What's In IT for Me? This question is asked by all students who take this course. The book will show you that IT is the backbone of any business, whether a student is majoring in Accounting, Finance, Marketing, Human Resources, or Production/Operations Management.

Modern Statistics for Modern Biology (Paperback): Susan Holmes, Wolfgang Huber Modern Statistics for Modern Biology (Paperback)
Susan Holmes, Wolfgang Huber
R1,303 R1,114 Discovery Miles 11 140 Save R189 (15%) Shipped within 7 - 12 working days

If you are a biologist and want to get the best out of the powerful methods of modern computational statistics, this is your book. You can visualize and analyze your own data, apply unsupervised and supervised learning, integrate datasets, apply hypothesis testing, and make publication-quality figures using the power of R/Bioconductor and ggplot2. This book will teach you 'cooking from scratch', from raw data to beautiful illuminating output, as you learn to write your own scripts in the R language and to use advanced statistics packages from CRAN and Bioconductor. It covers a broad range of basic and advanced topics important in the analysis of high-throughput biological data, including principal component analysis and multidimensional scaling, clustering, multiple testing, unsupervised and supervised learning, resampling, the pitfalls of experimental design, and power simulations using Monte Carlo, and it even reaches networks, trees, spatial statistics, image data, and microbial ecology. Using a minimum of mathematical notation, it builds understanding from well-chosen examples, simulation, visualization, and above all hands-on interaction with data and code.

2018 Standard Catalog of Cryptocurrencies (Electronic book text): Daniel F Wehleit, Mateo Marin 2018 Standard Catalog of Cryptocurrencies (Electronic book text)
Daniel F Wehleit, Mateo Marin
R781 R508 Discovery Miles 5 080 Save R273 (35%) Shipped within 7 - 12 working days
Cambridge Series in Statistical and Probabilistic Mathematics, Series Number 50 - Model-Based Clustering and Classification for... Cambridge Series in Statistical and Probabilistic Mathematics, Series Number 50 - Model-Based Clustering and Classification for Data Science: With Applications in R (Hardcover)
Charles Bouveyron, Gilles Celeux, T. Brendan Murphy, Adrian E. Raftery
R1,377 R1,299 Discovery Miles 12 990 Save R78 (6%) Shipped within 7 - 12 working days

Cluster analysis consists of methods for finding groups in data automatically. Most methods have been heuristic and leave open such central questions as: How many clusters are there? Which clustering method should I use? How should I handle outliers? This introduction frames cluster analysis in terms of statistical models, yielding principled estimation, testing and prediction methods, and soundly-based answers to central questions. It develops basic ideas of model-based clustering in an accessible but rigorous way, using extensive real-world data examples and providing R code for many methods, and describes modern developments for high-dimensional data and networks. It explains recent methodological advances, such as Bayesian regularization methods, non-Gaussian model-based clustering, cluster merging, variable selection, semi-supervised classification, clustering of functional data, text and images, and co-clustering. Written for advanced undergraduates and beginning graduate students in data science, researchers, and practitioners, it assumes basic knowledge of multivariate calculus, linear algebra, probability and statistics.

Management of Information Security (Paperback, 4th edition): Herbert Mattord, Michael Whitman Management of Information Security (Paperback, 4th edition)
Herbert Mattord, Michael Whitman
R802 R682 Discovery Miles 6 820 Save R120 (15%) Shipped within 8 - 13 working days

MANAGEMENT OF INFORMATION SECURITY, Fourth Edition gives readers an overview of information security and assurance using both domestic and international standards, all from a management perspective. Beginning with the foundational and technical components of information security, this edition then focuses on access control models, information security governance, and information security program assessment and metrics.The Fourth Edition is revised and updated to reflect changes in the field, including the ISO 27000 series, so as to prepare readers to succeed in the workplace.

Data Science from Scratch 2e (Paperback, 2 New Edition): Joel Grus Data Science from Scratch 2e (Paperback, 2 New Edition)
Joel Grus
R1,234 R704 Discovery Miles 7 040 Save R530 (43%) Shipped within 7 - 12 working days

Data science libraries, frameworks, modules, and toolkits are great for doing data science, but they're also a good way to dive into the discipline without actually understanding data science. With this updated second edition, you'll learn how many of the most fundamental data science tools and algorithms work by implementing them from scratch. If you have an aptitude for mathematics and some programming skills, author Joel Grus will help you get comfortable with the math and statistics at the core of data science, and with hacking skills you need to get started as a data scientist. Today's messy glut of data holds answers to questions no one's even thought to ask. This book provides you with the know-how to dig those answers out.

Data Visualization - A Practical Introduction (Paperback): Kieran Healy Data Visualization - A Practical Introduction (Paperback)
Kieran Healy
R786 R543 Discovery Miles 5 430 Save R243 (31%) Shipped within 7 - 12 working days

An accessible primer on how to create effective graphics from data This book provides students and researchers a hands-on introduction to the principles and practice of data visualization. It explains what makes some graphs succeed while others fail, how to make high-quality figures from data using powerful and reproducible methods, and how to think about data visualization in an honest and effective way. Data Visualization builds the reader (TM)s expertise in ggplot2, a versatile visualization library for the R programming language. Through a series of worked examples, this accessible primer then demonstrates how to create plots piece by piece, beginning with summaries of single variables and moving on to more complex graphics. Topics include plotting continuous and categorical variables; layering information on graphics; producing effective oesmall multiple plots; grouping, summarizing, and transforming data for plotting; creating maps; working with the output of statistical models; and refining plots to make them more comprehensible. Effective graphics are essential to communicating ideas and a great way to better understand data. This book provides the practical skills students and practitioners need to visualize quantitative data and get the most out of their research findings. Provides hands-on instruction using R and ggplot2 Shows how the oetidyverse of data analysis tools makes working with R easier and more consistent Includes a library of data sets, code, and functions

The Truth Machine - The Blockchain and the Future of Everything (Paperback, Epub Edition): Michael J. Casey, Paul Vigna The Truth Machine - The Blockchain and the Future of Everything (Paperback, Epub Edition)
Michael J. Casey, Paul Vigna 1
R353 R248 Discovery Miles 2 480 Save R105 (30%) Shipped within 7 - 12 working days

From the authors of the fascinating The Age of Cryptocurrency, comes the definitive work on the Internet's next big thing: the blockchain. Many of the `legacy systems' once designed to make our lives easier and our economy more efficient are no longer up to the task; big banks have grown more entrenched, privacy exists only until the next hack, and credit card fraud has become a fact of life. However, there is a way past all this-a new kind of operating system with the potential to revolutionise our economy: the blockchain. In The Truth Machine, Michael J. Casey and Paul Vigna demystify the blockchain and explain why it can restore personal control over our data, assets, and identities; grant billions of excluded people access to the global economy; and shift the balance of power to revive society's faith in itself. They reveal the empowerment possible when self-interested middlemen give way to the transparency of the blockchain, while highlighting the job losses, assertion of special interests, and threat to social cohesion that will accompany this shift. With a balanced perspective, Casey and Vigna show why we all must care about the path that blockchain technology takes-moving humanity forward, not backward.

The Definitive Guide to DAX - Business intelligence with Microsoft Excel, SQL Server Analysis Services, and Power BI... The Definitive Guide to DAX - Business intelligence with Microsoft Excel, SQL Server Analysis Services, and Power BI (Paperback, 2nd edition)
Marco Russo, Alberto Ferrari
R971 R750 Discovery Miles 7 500 Save R221 (23%) Shipped within 7 - 11 working days

This comprehensive and authoritative guide will teach you the DAX language for business intelligence, data modeling, and analytics. Leading Microsoft BI consultants Marco Russo and Alberto Ferrari help you master everything from table functions through advanced code and model optimization. You'll learn exactly what happens under the hood when you run a DAX expression, how DAX behaves differently from other languages, and how to use this knowledge to write fast, robust code. If you want to leverage all of DAX's remarkable power and flexibility, this no-compromise "deep dive" is exactly what you need. Perform powerful data analysis with DAX for Microsoft SQL Server Analysis Services, Excel, and Power BI Master core DAX concepts, including calculated columns, measures, and error handling Understand evaluation contexts and the CALCULATE and CALCULATETABLE functions Perform time-based calculations: YTD, MTD, previous year, working days, and more Work with expanded tables, complex functions, and elaborate DAX expressions Perform calculations over hierarchies, including parent/child hierarchies Use DAX to express diverse and unusual relationships Measure DAX query performance with SQL Server Profiler and DAX Studio

R for Data Science (Paperback): Garrett Grolemund, Hadley Wickham R for Data Science (Paperback)
Garrett Grolemund, Hadley Wickham 1
R1,044 R601 Discovery Miles 6 010 Save R443 (42%) Shipped within 7 - 12 working days

Learn how to use R to turn raw data into insight, knowledge, and understanding. This book introduces you to R, RStudio, and the tidyverse, a collection of R packages designed to work together to make data science fast, fluent, and fun. Suitable for readers with no previous programming experience, R for Data Science is designed to get you doing data science as quickly as possible. Authors Hadley Wickham and Garrett Grolemund guide you through the steps of importing, wrangling, exploring, and modeling your data and communicating the results. You'll get a complete, big-picture understanding of the data science cycle, along with basic tools you need to manage the details. Each section of the book is paired with exercises to help you practice what you've learned along the way. You'll learn how to: Wrangle-transform your datasets into a form convenient for analysis Program-learn powerful R tools for solving data problems with greater clarity and ease Explore-examine your data, generate hypotheses, and quickly test them Model-provide a low-dimensional summary that captures true "signals" in your dataset Communicate-learn R Markdown for integrating prose, code, and results

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