ASP.NET Core Entity Framework Core

Question 1

What class is the primary entry point for Entity Framework Core database operations?

Accepted Answer

DbContext

Answer

DatabaseContext

Answer

EfContext

Answer

DataContext

Question 2

Which method saves all pending changes in the EF Core DbContext to the database?

Accepted Answer

SaveChangesAsync()

Answer

CommitAsync()

Answer

FlushAsync()

Answer

PersistAsync()

Question 3

What does DbSet<TEntity> represent in Entity Framework Core?

Accepted Answer

A collection of all entities of a given type that can be queried and saved

Answer

A cached list of entities

Answer

A database table definition file

Answer

A set of raw SQL queries

Question 4

Which EF Core method retrieves an entity by its primary key from the DbContext?

Accepted Answer

FindAsync()

Answer

FirstOrDefaultAsync()

Answer

SingleAsync()

Answer

GetByIdAsync()

Question 5

What is a migration in Entity Framework Core?

Accepted Answer

A set of code files that record schema changes and can be applied to update the database

Answer

A SQL script run at deployment

Answer

A backup of the current database state

Answer

A version of the DbContext configuration

Question 6

Which CLI command creates a new EF Core migration?

Accepted Answer

dotnet ef migrations add <MigrationName>

Answer

dotnet ef db update

Answer

dotnet ef migration create

Answer

dotnet ef schema add