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面试准备

Entity Framework 面试题与答案

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问题 1. What is Entity Framework (EF)?

Entity Framework (EF) is an object-relational mapping (ORM) framework that enables developers to work with relational data using domain-specific objects.

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问题 2. Explain Code First approach in Entity Framework.

Code First is an approach where you define your data model using C# or VB.NET classes, and the database is generated based on these classes.

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问题 3. What is DbContext in Entity Framework?

DbContext is a class in EF that represents a session with the database, allowing you to query and save data.

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问题 4. Differentiate between DbSet and DbContext in Entity Framework.

DbContext is a representation of a session with the database, while DbSet is a collection of entities that are used to perform database operations on those entities.

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问题 5. Explain Lazy Loading in Entity Framework.

Lazy Loading is a feature in EF where related entities are not loaded from the database until they are explicitly accessed in code.

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What is Entity Framework (EF)?