September 2015
Intermediate to advanced
1320 pages
34h 5m
English
Content preview from Professional Visual Studio 2015
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Chapter 31The ADO.NET Entity Framework
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One of the core requirements in business applications (and many other types of applications) is the ability to store and retrieve data in a database. However, that's easier said than done because the relational schema of a database does not blend well with the object hierarchies that you prefer to work with in code. To create and populate these object hierarchies required a lot of code to be written to transfer data from a data reader into a developer-friendly object model, which was then usually difficult to maintain. It was such a source of constant frustration that many developers turned to writing code generators or various other tools that automatically created the code to access a database based on its structure. However, code generators usually created a 1:1 mapping between the database structure and the object model, which was hardly ideal either, leading to a problem called “object relational impedance mismatch,” where how data was stored in the database did not necessarily have a direct relationship with how developers wanted to model the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.