What is Entity Framework?
Writing and managing ADO.Net code for data access is a tedious and monotonous job. Microsoft has provided an O/RM framework called "Entity Framework" to automate database related activities for your application.Microsoft has given the following definition of Entity Framework:
The Microsoft ADO.NET Entity Framework is an Object/Relational Mapping (ORM) framework that enables developers to work with relational data as domain-specific objects, eliminating the need for most of the data access plumbing code that developers usually need to write. Using the Entity Framework, developers issue queries using LINQ, then retrieve and manipulate data as strongly typed objects. The Entity Framework's ORM implementation provides services like change tracking, identity resolution, lazy loading, and query translation so that developers can focus on their application-specific business logic rather than the data access fundamentals.
Entity framework is an Object/Relational Mapping (O/RM) framework. It is an enhancement to ADO.NET that gives developers an automated mechanism for accessing & storing the data in the database.
Entity framework is useful in three scenarios. First, if you already have existing database or you want to design your database ahead of other parts of the application. Second, you want to focus on your domain classes and then create the database from your domain classes. Third, you want to design your database schema on the visual designer and then create the database and classes.
The following figure illustrates the above scenarios.
EF can also create the database from your domain classes, thus you can focus on your domain-driven design.
EF provides you a model designer where you can design your DB model and then EF creates database and classes based on your DB model.
What is O/RM?
ORM is a tool for storing data from domain objects to relational database like MS SQL Server, in an automated way, without much programming. O/RM includes three main parts: Domain class objects, Relational database objects and Mapping information on how domain objects map to relational database objects (tables, views & storedprocedures). ORM allows us to keep our database design separate from our domain class design. This makes the application maintainable and extendable. It also automates standard CRUD operation (Create, Read, Update & Delete) so that the developer doesn't need to write it manually.A typical ORM tool generates classes for the database interaction for your application as shown below.
There are many ORM frameworks for .net in the market such as DataObjects.Net, NHibernate, OpenAccess, SubSonic etc. Entity Framework is an open source ORM framework from Microsoft.
Please note that Entity Framework is an open source framework by Microsoft. You can contribute to the Entity Framework project on codeplex.
Entity Framework Architecture
The following figure shows the overall architecture of the Entity Framework. Let us now look at the components of the architecture individually:Conceptual Model: The conceptual model contains the model classes and their relationships. This will be independent from your database table design.
Storage Model: Storage model is the database design model which includes tables, views, stored procedures, and their relationships and keys.
Mapping: Mapping consists of information about how the conceptual model is mapped to the storage model.
LINQ to Entities: LINQ to Entities is a query language used to write queries against the object model. It returns entities, which are defined in the conceptual model. You can use your LINQ skills here.
Entity SQL: Entity SQL is another query language just like LINQ to Entities. However, it is a little more difficult than L2E and the developer will have to learn it separately.
Object Service:Object service is a main entry point for accessing data from the database and to return it back. Object service is responsible for materialization, which is the process of converting data returned from an entity client data provider (next layer) to an entity object structure.
Entity Client Data Provider:The main responsibility of this layer is to convert L2E or Entity SQL queries into a SQL query which is understood by the underlying database. It communicates with the ADO.Net data provider which in turn sends or retrieves data from the database.
ADO.Net Data Provider:This layer communicates with the database using standard ADO.Net.
is plural. For example, if SchoolDB has Students table name then entityset would be singular Student. Similarly, relationships between the models will be pluralized if the table has one-to-many or many-to-many relationship with other tables. For example, Student has many-to-many relationship with Course table so Student entity set will have plural property name 'Courses' for the collection of courses.speak to them about us.
Want to learn ASP.NET MVC 5 from scratch in a fun, step-by-step and pragmatic way? Watch this tutorial and you'll start coding in a few minutes. This tutorial series shows you how to create .NET Framework applications and components using the .NET Framework SDK. The development tools in the SDK use the .NET Framework to allow you to quickly build and deploy robust applications that take advantage of the new common language run-time environment.
Smart Software Solutions Inc. is a computer consulting company headquartered in Pierre, South Dakota. The company was founded by Matthew Smart in 2004. Smart Software Solutions specializes in the creation and hosting of web based information management systems, dynamic websites, and custom applications for businesses of all sizes. Smart Software Solutions Inc. has a dedicated team of developers with the motivation and desire to write great software.
We are a highly skilled and energetic U.S. based software development team with a proven track record and our other business channels.
We deliver excellent service built upon an open dialogue with our clients. Our staff of 40 plus development engineers are experienced in all phases of software development. We have a very flexible skill-set.
Part of redesigning and re-organizing strategy incorporated identifying what software they wanted to be able to present to their clients and visitors, and how that software would be formatted. We worked with them to produce a UX prototype that presented a more intuitive layout and navigation path through their site, bringing the software offerings into a central hub (called “Relationship Banker”), while making support and other resources easier to reach.
Master the fundamentals of C# and .NET using this simple, pragmatic and step-by-step tutorial for beginners. With C# you can build mobile apps, web apps, desktop apps and games.
ASP.NET Core is an open-source and cross-platform framework for building modern web apps using .NET. It is a significant redesign of ASP.NET that is built from the ground up to provide an optimized development framework for apps that are either deployed to the cloud or run
We created content prototypes to make populating the new software areas much simpler. The software population process makes creating content structured, straight-forward, and quicker to import, saving time while maintaining creative integrity
If you ‘re not sure about how Smart Software Solutions Inc handles customer's software project, we can help. Visit our site for a 5- step method of working out your customer's software project handling success rate. This is a great consistent metric that you can measure each month to see how well you ‘re well.
If your success rate is less that 90%, we think that could be even better by tackling customer complaints in a different way.
Smart Software Solutions Inc. makes software, and consults, on improving customer compliant handling. We ‘re really good at it, and it’s not just us who say so, we ‘ve work with 500 to 1000 fortune company such as Firebox, Boots, Fiverr and Agent Provpcatteur. We ‘ll happily pass on their details if you ‘d like to speak to them about us.
Work out your handling success rate, and if you think you need us, get in touch. Hopefully we won’t hear from you!























