Quick Answer: What Is Mapping In Entity Framework?

What is fluent interface in C#?

A fluent interface is an object-oriented API that depends largely on method chaining.

The goal of a fluent interface is to reduce code complexity, make the code readable, and create a domain specific language (DSL).

It is a type of method chaining in which the context is maintained using a chain..

What is fluent validation C#?

Validation is a process to validate and check the data inserted by the user in the view. … Fluent Validation contains . NET libraries and the validation is performed using the Lambda expression. Use Fluent Validation when you want to create some advanced and complex validation for the user data.

What is include in Entity Framework?

As a performance measure, Include() allows you to indicate which related entities should be read from the database as part of the same query. Excerpt from the linked page: Here are several ways that the Entity Framework can load related data into the navigation properties of an entity: Lazy loading.

What is Linq and lambda expressions?

A lambda expression is a convenient way of defining an anonymous (unnamed) function that can be passed around as a variable or as a parameter to a method call. Many LINQ methods take a function (called a delegate) as a parameter. … The => operator is called the “lambda operator”.

What is fluent API Java?

Fluent API means to build an API in such way so that it meets the following criteria: The API user can understand the API very easily. The API can perform a series of actions in order to finish a task. In Java, we can do it with a series of method calls (chaining of methods).

How do you add a table map in Entity Framework?

Create and Edit Association MappingsRight-click an association in the design surface and select Table Mapping. … Click Add a Table or View. … Select the table to which the association will map. … For each key property, click the Column field, and select the column to which the property will map.

What is DbContext C#?

A DbContext instance represents a combination of the Unit Of Work and Repository patterns such that it can be used to query from a database and group together changes that will then be written back to the store as a unit. DbContext is conceptually similar to ObjectContext.

What is IEntityTypeConfiguration?

IEntityTypeConfiguration Interface Allows configuration for an entity type to be factored into a separate class, rather than in-line in OnModelCreating(ModelBuilder).

When should I use Fluent API?

Entity Framework Fluent API is used to configure domain classes to override conventions. EF Fluent API is based on a Fluent API design pattern (a.k.a Fluent Interface) where the result is formulated by method chaining. In Entity Framework Core, the ModelBuilder class acts as a Fluent API.

What is difference between ADO net and Entity 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 ORM Model, which used LINQ to access database, and code is autogenerated whereas Ado.net code is larger than Entity Framework. Ado.net is faster than Entity Framework.

What is Entity Framework and how it works?

The Entity Framework is a set of technologies in ADO.NET that support the development of data-oriented software applications. … They must model the entities, relationships, and logic of the business problems they are solving, and they must also work with the data engines used to store and retrieve the data.

How do I turn off lazy loading in Entity Framework?

We can disable lazy loading for a particular entity or a context. To turn off lazy loading for a particular property, do not make it virtual. To turn off lazy loading for all entities in the context, set its configuration property to false.

What is meant by Entity Framework?

Entity Framework is an Object Relational Mapper (ORM) which is a type of tool that simplifies mapping between objects in your software to the tables and columns of a relational database. Entity Framework (EF) is an open source ORM framework for ADO.NET which is a part of . NET Framework.

What is .NET mapping?

AutoMapper is a popular object-to-object mapping library that can be used to map objects belonging to dissimilar types. As an example, you might need to map the DTOs (Data Transfer Objects) in your application to the model objects.

What is the benefit of Entity Framework?

Advantages of Entity Framework It reduce development time. It reduce development cost. It enables developers to visually design models and mapping of database. It provides capability of programming a conceptual model.

What is lazy loading in Entity Framework?

Lazy loading is the process whereby an entity or collection of entities is automatically loaded from the database the first time that a property referring to the entity/entities is accessed. Lazy loading means delaying the loading of related data, until you specifically request for it.

What is ModelBuilder in Entity Framework?

Provides a simple API surface for configuring a IMutableModel that defines the shape of your entities, the relationships between them, and how they map to the database. You can use ModelBuilder to construct a model for a context by overriding OnModelCreating(ModelBuilder) on your derived context.

What is fluent API in Entity Framework?

Fluent API is another way to configure your domain classes. … The Code First Fluent API is most commonly accessed by overriding the OnModelCreating method on your derived DbContext. Fluent API provides more functionality for configuration than DataAnnotations.