By Fabrice Marguerie
ISBN-10: 1933988169
ISBN-13: 9781933988160
LINQ, Language built-in question, is a brand new extension to the visible simple and C# programming languages designed to simplify information queries and database interplay. It addreses O/R mapping matters via making question operations like SQL statements a part of the programming language. including to its strength, LINQ is extensible and will be used to question numerous info assets. It deals integrated aid for querying in-memory collections like arrays or lists, XML, DataSets, and relational databases. LINQ in motion is a fast paced, finished instructional for pro builders who are looking to use LINQ. This publication explores what might be performed with LINQ, indicates you the way it really works in an program, and addresses the rising top practices.
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Extra resources for LINQ in Action
Example text
In fact, Microsoft already offers more LINQ providers than just LINQ to Objects, LINQ to SQL, and LINQ to XML. info What is LINQ? NET Entity Framework). We will present these tools in the second and third parts of this book. For now, let’s keep the focus on the big picture. 1 shows how we can represent the LINQ building blocks and toolset in a diagram. 1 are not standalone tools. They can be used directly in your programming languages. This is possible because the LINQ framework comes as a set of language extensions.
Extensibility model for multiple data sources Be able to access other data sources than relational databases or XML documents. Allow other frameworks to enable LINQ support for their own needs. Type safety Compile-time type checking to avoid problems that were previously discovered at run-time only. The compiler will catch errors in your queries. Extensive IntelliSense support (enabled by strong-typing) Assist developers when writing queries to improve productivity and to help them get up to speed with the new syntax.
The problem is that at some point we need to make the object model and the relational model work together. NET involve entity classes, business rules, complex relationships, and inheritance, whereas a relational data source involves tables, rows, columns, and primary and foreign keys. A typical solution for bridging object-oriented languages and relational databases is object-relational mapping. This refers to the process of mapping our relational data model to our object model, usually back and forth.
LINQ in Action by Fabrice Marguerie
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