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A Legacy Migration Classic
Methodical Resolution of Pivotal IssuesThe book describes, rationalizes, and selectively illustrates the RMM Approach, where the continued availability of the legacy system capabilities is necessary over the sequence of modernization increments. While the approach is illustrated through an incremental transformation of a legacy COBOL-based system to a Java-based derivative, the RMM Approach is nevertheless applicable to other modernization problems or technologies. Moreover, the book does an exceptionally good job of interweaving explanations with examples. These examples are modest but salient and revealing, thereby avoiding unwarranted detail or distractions.
The advocated approach is at once both architecture-centric and component-centric. Architecture centricity captures and sustains a rather specific vision of the as-desired system, and the associated target architecture provides a stable reference over the various modernization activities. Component centricity enables the identification, analysis, grouping, and ultimate realization of system elements that are allocated to the respective modernization increments. Overall then, the target architecture establishes the initial and termination points of a modernization project, and the componentization installments determine the actual redevelopment trajectory connecting the project end points.
For me, the most intriguing, innovative, and vital parts of the approach appear under the RMM activities labeled Define Modernization Strategy and Reconcile Strategy with Stakeholder Needs (Chapters 13-15 and Chapter 16, respectively). Basically, the modernization strategy provides a systematic approach to delineating, analyzing, and grouping modernization elements through an examination of the legacy system implementation, subject to project constraints and certain prior higher-level technical decisions. Then, the finalization of element groupings into sequential increments is determined using programmatic preferences of the various stakeholders. This two-stage definition of modernization increments is driven prominently by cost and risk considerations, as well as by programmatic and technical factors. Ultimately, the designated increments establish waypoints on the aforementioned redevelopment trajectory, thereby identifying interim architectural configurations that facilitate closure on the target architecture, while simultaneously maintaining user capabilities during the modernization effort.
In all, 'Modernizing Legacy Systems' is a readable, coherent, illuminating, and surprisingly broad treatment of a vital topic. Hopefully, the RMM Approach or variants thereof will see widespread use in industry, thereby exploiting "a systematic and fact-based method that avoids arbitrary, intuitive decision making..."


Devotion to God---Learn it here
A MUST HAVE for every Christian woman!

So real, I had to cry for the little boy, Matthew
The Morning of the White Stone

Unexpected Treasure!
Simply Awesome!I think this book should be required reading for young women and any couples thinking about or entering into parenthood.


Best Tax book!
Easy, Comprehensive Overview of Taxes

A wonderful mystery
A good old fashioned murder mystery!

How to handle the grief of losing your father.
Grizzard remembers his father.

The whole story!
This book is an excellent history of language as a tool

Excellent!
Best and Best

A book of enormous impactThe nature of the story is of the many races during the 1980s to identify the genes causative of cancer. The narrative largely follows one lab, that of Robert Weinberg at MIT, and details their many setbacks and their even more groundbreaking victories. The author takes an active part, effectively becoming absorbed into the research and drawing the readers with her.
What the book offers, then, is a daily tread through the lives of basic researchers: not filled with sterile labs and stuffy professors, but with the drama, intrigue, and bittersweet triumphs normally found only in fiction. As there are no outright heroes or villains (except perhaps cancer itself), the moral ambiguity of each of the subplots makes the struggles more human. There is as much backstabbing, cut-throat competitiveness, and outright selfishness in the research world shown here as in any other professional field. But there is also collaboration, celebration, and respect. Anyone who thinks basic science is boring should be convinced otherwise.
The other side of the story is, indeed, academic in nature, though interwoven seamlessly with the stories. Despite the heavy scientific concepts throughout the book, Natalie Angier -- a non-scientistist herself -- has taken great pains to evince the most convoluted theories in a light, colorful language. Not all of it will be clear immediately, but the essence of the book doesn't require total familiarity with the technicalities. It is the humanity of the researchers that drives this book, not the research itself.
For undergraduates unsure of thier career choices, I can recommend no better book than Natural Obsessions for deciding if scientific research is for them. For some, like one of my friends who chose med school over grad school, the themes of competitiveness and failure can be disheartening. For others, like myself, it can open up a new perspective on science, one that can be exciting as well as rewarding if you have a passion for it.
In depth, but not a bore.
A well-defined plan of migration is presented early on for a complex retail supply system migration. Each phase of the plan is presented and explained in detail - covering both management and development perspectives equally well. For those of us who spend our days in a developer's world, the additional information on managing the migration effort contributes the right mix of information for what we are tasked to accomplish. I appreciated the technical specifics that were included throughout (i.e., utilizing Enterprise Java Beans) so that I didn't need to use my imagination as to how this plan would fit into my current project. Everything you need to know about legacy migration and then some is covered in this book. I knew that when I started to agree with what I was reading (aka Been There Done That) and could relate what was in the book to my own experience that I had found a winner.
This book is a good read and a great reference guide to help you get through a large, complex legacy migration. When you finally finish the book, take another look to capture all the detail you missed on your first read-through.