9 lines
971 B
Markdown
9 lines
971 B
Markdown
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By [Rick Anderson](https://twitter.com/RickAndMSFT)
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In this section, you add classes for managing movies in a database. You use these classes with [Entity Framework Core](https://docs.microsoft.com/ef/core) (EF Core) to work with a database. EF Core is an object-relational mapping (ORM) framework that simplifies the data access code that you have to write.
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The model classes you create are known as POCO classes (from "plain-old CLR objects") because they don't have any dependency on EF Core. They define the properties of the data that are stored in the database.
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In this tutorial, you write the model classes first, and EF Core creates the database. An alternate approach not covered here is to [generate model classes from an existing database](https://docs.microsoft.com/ef/core/get-started/aspnetcore/existing-db).
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[View or download](https://github.com/aspnet/Docs/tree/master/aspnetcore/tutorials/razor-pages/razor-pages-start/sample/RazorPagesMovie) sample.
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