Internet Programming

1-The _______________ represent various components that a database represents, and the _______________ allows communication with the database.

		component properties - database property
		entity classes - database context class
		facade classes - dataset classes
		context classes - dataset component

2-Writing entity and database context classes before generating a new database is called

		Code First development
		Initial Class development
		Database First development
		Entity Relationship development

3-To establish a many-to-many relationship between two entities, you typically use a

		composite entity
		linking entity
		foreign entity
		context entity

4-If one customer can have many invoices, but each invoice can belong to only one customer, what type of relation exists between customers and invoices?

		primary-to-foreign
		many-to-many
		one-to-one
		one-to-many

5-You can configure the creation of database tables in each of the following ways except

		configuration by convention
		data attributes
		Fluent API
		JSON plugins

6-Which of the following commands would you use in the Package Manager Console if you want to revert a database to a previous migration?

		Drop-Database
		Add-Migration
		Scaffold-DbContext
		Update-Database

7-To avoid losing modifications of entity classes that are generated from a database, it’s common to use

		entity cloning
		code segmentation
		direct injection
		partial classes

8-The concurrency option in EF Core that throws an exception whenever a row has been changed since its last retrieval is called

		refusal concurrency
		optimistic concurrency
		pessimistic concurrency
		last in wins

9-Providing basic CRUD operations for each class and further abstracting their details with use of an interface is a common design pattern named the

		requisition pattern
		chain of responsibility pattern
		observer pattern
		repository pattern

10-The unit of work pattern provides a central class that allows several _____________ objects to share a DB context.

		observer
		requisition
		chain of responsibility
		repository

11-To commit insert, update, and delete operations on a DbSet<T> object to the database, what method of the DbContext class must you call?

		Disconnect()
		Update()
		SaveChanges()
		Commit()

12-To begin encapsulating code for data access, it’s often helpful to begin by adding extention methods to the interface named

		ILINQable<T>
		IQueryable<T>
		IEnumerable<T>
		IRunnable<T>