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The practice of Test-Driven Development (TDD) has helped thousands of software developers improve quality, agility, productivity, and speed. In Test-Driven Database Development, Max Guernsey, III shows how to adapt TDD to achieve the same powerful benefits in database design and development.
Guernsey first explains why TDD offers so much potential to database practitioners, and how to overcome obstacles such as the lack of conventional "testable classes." You'll learn how to use "classes of databases" to manage change more effectively; how to define testable database behaviors; how to maximize long-term maintainability by limiting a database's current scope; and how to use "emergent design" to simplify future expansion.
Building on this foundation, the author guides you through implementing modern TDD processes and database refactoring. He presents practical techniques for improving legacy databases; for deviating from strict TDD when necessary; and for adapting TDD to applications that persist data in file systems, XML, or serialized objects. Guernsey shows how to
* Build a simple infrastructure to track and standardize scripts and databases
* Define a sustainable TDD process for database design
* Safely change a design without losing data
* Design new databases that are lighter, leaner, simpler, more testable, and easier to change
* Reduce design costs by eliminating duplication
* Gradually bring the benefits of TDD, agility, and modern design to legacy databases
* Remediate errors that find their way into database designs
* Isolate behaviors and avoid unwanted dependencies that cause tests to fail
With this book as a guide, you will learn how to apply the proven practice of TDD to your database needs, and organize and optimize your organization's data for a significant competitive advantage.
Test-Driven Database Development is the newest title in the highly respected NetObjectives Lean-Agile Series.
- Sales Rank: #921343 in eBooks
- Published on: 2013-02-20
- Released on: 2013-02-20
- Format: Kindle eBook
From the Author
This book is the culmination of eight years' study, reflection, cooperation, and regular old fashioned work.
When I started working on the problem of enabling test-driven database development, I approached it as a technical problem - one to be solved by a tool. For years, I tilted at windmills, trying to get people to just use the tool I wrote. After some time, it became apparent that the problem wasn't tools - at least, not exclusively - it was a people problem. It wasn't obvious to someone why they would use the tool I wrote or how they could use it.
I then embarked on a crusade to help people understand some techniques that serve as the foundation of test-driven database development; most notably, transition testing. I gained some traction on that front when I wrote Transition Testing: Cornerstone of Database Agility. However, as the title implies, that work really only locked down one part of the problem. There was a lot more to the story and I needed to find a way to tell it.
Finally, in 2010, I began writing a book on how to do lean and agile database development with the support of my then and current employer, Accelrys, Inc. Over time that was refined and evolved until it became this book: Test-Driven Database Development: Unlocking Agility. This book represents a complete system that enables a TDD process which is very nearly as fluid and natural to the task of database development as traditional TDD is to the task of object-oriented development.
It will take time to learn but I've found it well worth the investment. Once people are doing the process, I believe that the right tools will start to spring up around the work we all do.
About the Author
Max Guernsey is currently a Managing Member at Hexagon Software LLC and a product architect at Accelrys, Inc. For much of Max's professional career, he has been a consultant, advising a variety of software companies in many different industries using multiple programming and database technologies. In most of these engagements, he spent months or even years helping teams implement cutting-edge techniques such as test-driven development, object-oriented design, acceptance-test-driven development, and agile planning.
Max has always been a "hands-on" consultant, working with teams for long periods of time to help them build both software and skills. This series of diverse, yet deep, engagements helped him gain a unique understanding of the database-related testing and design problems that impede most agile teams. Since 2005, he has been thinking, writing, blogging, lecturing, and creating developer-facing software dedicated to resolving these issues.
Max posts regularly on his Twitter account (@MaxGuernseyIII) and his blog (maxg3prog.blogspot.com).
Most helpful customer reviews
3 of 4 people found the following review helpful.
The Real Deal... THE book for TDDD
By T Anderson
I was a little wary of this book when I first saw it. No real specific red flag came up, just the general thought of yet another TDD book that magically unlocks agility.
The author caught me by surprise as I started to read the book. He starts off with the way we need to change our view of databases from that of a particular instance into one of classes of databases. This line of thought is what enables TDD in the database world.
The third chapter he covers the differences and relationship between test-first programming and test-driven development. He gets you thinking in the right frame of mind about TDD.
The book continues with details of the practices and patterns you need to know to succeed at TDD with databases. I have listed the chapters below.
Chapter 1. Why, Who, and What
Chapter 2. Establishing a Class of Databases
Chapter 3. A Little TDD
Chapter 4. Safely Changing Design
Chapter 5. Enforcing Interface
Chapter 6. Defining Behaviors
Chapter 7. Building for Maintainability
Chapter 8. Error and Remediation
Chapter 9. Design
Chapter 10. Mocking
Chapter 11. Refactoring
Chapter 12. Legacy Databases
Chapter 13. The Façade Pattern
Chapter 14. Variations
Chapter 15. Other Applications
Through the process of showing us how to change our view of databases, the author introduces a way of building and deploying databases using XML scripts. He use XML to define the changes to the database, and a library he wrote to handle the parsing the XML and update the database. That technique is used throughout the book.
I mention that because it may be easy to miss when the author says "I'll leave the implementation details to you, but I typically express the database design in terms of XML documents and store the already-applied versions in a table." I want to point that out because as you start going through the code it may get a bit overwhelming when you see how much work the author puts into the supporting library and XML documents. His tools include using NUnit also. There is an NUnit plug-in for Visual Studio 2012 available which makes running the tests and debugging while testing a lot easier.
The thing to keep in mind is that the author is introducing TDDD (Test Driven Database Design) practices and patterns and he is using the implementation method he has used for years. I accomplish the same thing as the author but I use Visual Studio's Unit Test Project template for tests, the SQL Server Database Project template for database scripts, and TFS for versioning, branching, and merging the tests and database scripts. The point is, keep reading because the author includes great advice throughout the entire book.
The code samples are very well organized and usable. After changing the connection strings and using NuGet to download Moq and NUnit, everything ran as expected. The author uses C# to write the tests and parse the XML he uses to define the database structure and changes.
The author's writing style makes the book an entertaining and enjoyable read.
Overall I highly recommend this book to developers, database administrators, enterprise architects, and software architects.
1 of 1 people found the following review helpful.
The best book I have read on databases
By Steven Ensslen
_Test-Driven_Database_Development_ is the best book I have read on databases. I'm a professional database developer, with almost twenty years experience and certifications from multiple vendors.
This books describes the problems that plague business systems everywhere, and then clearly explains why they exist and simple processes to overcome them. Read this book and surpass your peers.
I agree with the negative review that at times the examples are challenging, and even that some of the terms are poorly chosen. But this book is truly brilliant and sorely needed. Invest the effort to learn its valuable lessons.
0 of 0 people found the following review helpful.
Painful
By Dimitri Shvorob
"Test-Driven Database Development" has next to nothing to teach about test-driven database development - what's on offer is a mixture of the trivial and the peculiar - and fills its 300 pages with database-design-themed ramblings by a wannabe Leo Tolstoy. This feels like a Sokal hoax perpetrated on Addison-Wesley.
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