EF,ASP.NET,MVC, Microservices For YP

What is Entity Framework?

• A database management system
• An Object-Relational Mapping (ORM) framework
• A web development framework
• A testing framework
• None of these

Which approach is used when you start with an existing database in Entity Framework?

• Code First
• Model First
• Database First
• Schema First
• None of these

What is DbContext in Entity Framework?

• A database connection string
• A class that represents a session with the database
• A data annotation attribute
• A LINQ query provider
• None of these

Which LINQ method is used to retrieve a single entity by its primary key?

• Single()
• First()
• Find()
• Where()
• None of these

What does the [Required] attribute do in Entity Framework?

• Makes a property optional
• Makes a property mandatory/not null
• Sets default value for a property
• Creates an index on the property
• None of these

Which method is used to save changes to the database in Entity Framework?

• Commit()
• Save()
• SaveChanges()
• Update()
• None of these

What is lazy loading in Entity Framework?

• Loading data slowly
• Loading related data automatically when accessed
• Loading data in background
• Loading data without queries
• None of these

Which attribute is used to specify the maximum length of a string property?

• [Length]
• [MaxLength]
• [StringLength]
• Both b and c
• None of these

What is the purpose of DbSet<T> in Entity Framework?

• To represent a table in the database
• To create database connections
• To execute stored procedures
• To handle transactions
• None of these

Which method is used to add a new entity to the context?

• Insert()
• Add()
• Create()
• New()
• None of these