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Pro Linq Object Relational Mapping in C# 2008by Vijay P Mehta
Synopses & Reviews
It is nearly impossible today to write enterprise software without the use of one or more relational databases. Granted, there are cases when the data is transient and not stored in a database, but for the most part, software needs to consume and manipulate data in a database. It sounds easy, but there are hundreds of ways to connect software systems to databases and thousands of people who think they have the skeleton key for data access layers. Pro LINQ Object Relational Mapping in C# 2008 explains an efficient, repeatable way to apply industry design patterns to build scalable object?oriented data access layers.
Object relational mapping (OR/M) has been a gray area in Microsoft development for many years. It's not that Microsoft language developers don?t understand OR/M; in fact, the opposite is true, as is exemplified by the glut of third?party .NET OR/M tools on the market. The struggle has come more from the lack of native tools with the object?oriented and object persistence capacity to effectively work in this arena. With the inception of .NET, Microsoft overcame the first obstacle by developing an object?oriented environment and framework. The second obstacle, the native object persistence layer, is only now being realized with the introduction of Language Integrated Query (LINQ) and LINQ's children, the Language Integrated Query for Relational Databases (LINQ to SQL) and the Language Integrated Query for the ADO.NET Entity Framework (LINQ to Entities). The gray area no longer exists, and the .NET developers of the world finally have the native tools required to build modular, reusable data access layers. What you?ll learn The powerful advantages that OR/M can bring to your code The native tools that are now available within Visual Studio 2008 for OR/M How to build scalable object?oriented data access layers that take advantage of OR/M's flexibility How LINQ fits into this picture, together with the advantages and disadvantages that it can bring How the concepts work in the real world by examining a fully worked and detailed case study, created with an architecture than can be easily applied to a wide range of other situations Who this book is for
This book is intended for Microsoft .NET developers who are using or evaluating Microsoft Visual Studio 2008 to build data-aware applications, and it will provide patterns and resources that can be used to build enterprise class software.
Book News Annotation:
This book explains patterns and practices needed for building enterprise-class, data-aware software applications. Although the vehicle for this message is C# 2008 and the two new object-relational mapping (ORM) tools from Microsoft (LINQ to SQL and the ADO.NET Entity Framework), the design patterns and architecture used in the book can be applied to any application requiring interaction with a database. Real-world examples give readers the tools to develop ORM solutions in .NET. Although some of the book is based on theory and design patterns, the focus is not on academic or theoretical discussion. The book is for anyone involved in developing software in .NET. Mehta is a software architect. Annotation ©2008 Book News, Inc., Portland, OR (booknews.com)
Object Relational Mapping (ORM) has been a huge part of software development in other areas of the programming market for a long time (most notably in Java with Hibernate). The popularity of third-party tools such as nHibernate for Windows development shows that Windows developers are aware of these techniques and eager to try them, but until now there have been no native tools released by Microsoft to give them easy access to this methodology. With the release of Visual Studio 2008 this is changing and native tools are now available for the first time through the new LINQ data access layer resulting in great interest amongst .NET developers.
This book aims to give experienced .NET developers a thorough grounding in Object Relational Mapping methodologies and show how LINQ can be used to achieve them. It is split into two parts. The first provides a detailed explanation of the key concepts and technologies, while the second brings them to life in a detailed fictional case study using an architecture that can be easily adapted to a wide range of readera (TM)s circumstances.
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