What is code first approach in Entity Framework?

What is code first approach in Entity Framework?

In the Code-First approach, you focus on the domain of your application and start creating classes for your domain entity rather than design your database first and then create the classes which match your database design.

What is the advantage of code first approach in Entity Framework?

The main advantages of using codefirst are: Development Speed – You do not have to worry about creating a DB you just start coding. Good for developers coming from a programming background without much DBA experience.

What is DB First and code First approach?

The Database First Approach provides an alternative to the Code First and Model First approaches to the Entity Data Model. It creates model codes (classes, properties, DbContext etc.) from the database in the project and those classes become the link between the database and controller.

Which approach is best in Entity Framework?

Database-First Approach of Entity Framework:

We can use the Database First Approach if the database schema already existing. In this approach, we generate the context and entities for the existing database using the EDM wizard. This approach is best suited for applications that use an already existing database.

What is the use of code first approach?

Code First allows you to define your model using C# or VB.Net classes. Additional configuration can optionally be performed using attributes on your classes and properties or by using a fluent API.

What is DbContext and DbSet in Entity Framework?

DbContext generally represents a database connection and a set of tables. DbSet is used to represent a table. Your code sample doesn’t fit the expected pattern.

Is code first better than database first?

The main difference between Code First approach and Database First approach is that the Code First enables you to write entity classes and its properties first without creating the database design first.

What is difference between code first and model first approach?

Code first approach is used for the fast development of the codes and developers have full control of the entire entities. In model first approach there is no existing database that offers the designer to create a conceptual data model.

Why do we use 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 difference between DbContext and ObjectContext?

DbContext can be used for DataBase first, code first and model first development. DbContext mainly contains a set of APIs that are very easy to use. The API is exposed by ObjectContext.
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ObjectContext VS DBContext.

What are the advantages disadvantages of code first approach?

Advantages and Disadvantages
You can use an existing database and create your tables and associations there. Easy to avoid data loss on changes because you will work from the database perspective. Query Performance (is a relative point that need to be measured).

Which is better lazy loading or eager loading?

Use Eager Loading when you are sure that you will be using related entities with the main entity everywhere. Use Lazy Loading when you are using one-to-many collections. Use Lazy Loading when you are sure that you are not using related entities instantly.

Is eager loading faster than lazy loading?

While lazy loading delays the initialization of a resource, eager loading initializes or loads a resource as soon as the code is executed. Eager loading also involves pre-loading related entities referenced by a resource.

What is DbContext and DbSet?

What is DbSet and Objectset in Entity Framework?

It discovers entity sets based on DbSet properties defined on the DbContext derived class (or in general, it discovers your model based on your code). ObjectContext does not do any discovery and is not convention based. It just reads your model from csdl, ssdl and msl artifacts.

Why code First is better than database first?

3)Database Version Control
Versioning databases is hard, but with code first and code first migrations, it’s much more effective. Because your database schema is fully based on your code models, by version controlling your source code you’re helping to version your database.

Should I use code first?

If you’re starting a new project, then it probably doesn’t even matter. I would generally recommend starting with the technology you feel strongest in. For instance, if you’re better at SQL than the coding language for the framework, then do database first, otherwise do code first.

How many types of loading are there in Entity Framework?

Entity Framework supports three ways to load related data – eager loading, lazy loading and explicit loading.

What is the difference between pagination and lazy loading?

Pagination offers limited engagement to the user so that they can find a particular item immediately. On the other hand, lazy loading provides more interaction to the user, and they tend to spend more time on their first visit.

What is lazy loading in EF?

Which is better load more or pagination?

Pagination is still the most popular way to load new items on a website because it ships by default in almost every single e-commerce platform. However, our usability test sessions found “Load more” buttons combined with lazy-loading to be a superior implementation, resulting in a more seamless user experience.

Which is better pagination or infinite scroll?

Pagination works best on websites where users are looking for specific pieces of content. Infinite scroll is better suited for the exploration of content, where users are browsing aimlessly for something interesting. Infinite scroll is also very effective on mobile devices.

What is difference between eager and lazy loading?

Lazy Loading vs. Eager Loading. While lazy loading delays the initialization of a resource, eager loading initializes or loads a resource as soon as the code is executed. Eager loading also involves pre-loading related entities referenced by a resource.

Is pagination a lazy load?

What is fetch type?

Enum FetchType. Defines strategies for fetching data from the database. The EAGER strategy is a requirement on the persistence provider runtime that data must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime that data should be fetched lazily when it is first accessed.