While performing .NET development using, traditional ways are followed wherein database tables with their relationships are made then classes inside code, for that business layer. The business logic is developed in these classes, which perform various functions and operations about the database. The movement of internet data involving the application as well as the database often requires complex coding. The developer in such instances spends time and effort keeping up with the modifications in the database.
The Entity Framework deals with a database table like a single entity, allowing developers to code and look after applications effortlessly. Creation of conceptual style of your data, using the entity-relationship model, allows developers to write down codes from this model, i.e. take care of database concepts in the code itself. The framework promises to make object-oriented development easy, efficient, and effective. It is an ORM, i.e. Object-Relational Mapping Framework which provides for mapping through the RDBMS schema towards the objects, offering an abstraction in the pattern.
The framework allows design and development at the conceptual level, wherein developers can define entity classes that are independent of the database and the ones that are mapped towards the tables from the database. Since these entities have their own schema, developers are shielded from database modifications, while the object context keeps a tab about the changed entities.
The framework does an awesome job of eliminating the gap between the database as well as the associated application, wherein the developer can focus around the entity representing the business model, instead of worrying in regards to the database or perhaps the frequent alterations in it. The first version from the framework found release with .NET 3.5 SP1, whilst the latest version 4.0 comes in collaboration with Visual Studio 2010 and .NET 4.0, with all the necessary technology and tools.
The framework performs the task of mapping relational tables, columns, and foreign key constraints of logical models to entities/relationships existing in conceptual models, where inside the data model generates extendable data classes, produced from base classes those provide object services for establishing entities as objects, tracking and saving modifications.
It is less difficult for ASP .NET developers to govern and assist these objects related through navigation properties. Object Services component with the framework enables developers to query, insert, update, delete data, expressed as CLR objects those are essentially entity types’ instances. This component props up entity-SQL and also the language-integrated queries. EF facilitates applications’ access and modification of information, represented as entities and relationships within the conceptual model while object services use the info-model to translate and transform object queries against forms of entities into data source-specific queries.
The resultant objects are again managed with the object services. The abstraction layer relating to the data model along with the application information is thus provided with the framework. Now, if the logical tables are generated to the entity data diagram, the framework actually combines multiple data tables to your single entity.
The framework provides many functional benefits for the developers: There’s more freedom for developers to work on an application-oriented ‘conceptual’ model – with support for entities, relationships, composition, complex members, inheritance, identity resolution, chance tracking, etc. Development initiatives are free from tightly-bound storage schema or database engine dependency.
Changes in Database Schema-Conceptual Model mapping are separate from changes inside the code. A consistent Object Model allows developers to map the model to be able to data schemas, even indiscreet RDBMS. A single data-source schema could possibly be mapped to many conceptual models. LINQ support enables run-time syntax validation for queries from the conceptual model, during compilation.