EF = Entity Framework. (1) It's an ORM (Object-rational Mapper) for querying SQL databases into objects. Somewhat the same space as "Hibernate" in Java. (2) S

EF = Entity Framework. (1) It's an ORM (Object-rational Mapper) for querying SQL databases into objects. Somewhat the same space as "Hibernate" in Java. (2) Some prefer e.g. Dapper (3) as it's much more light-weight. EF is very much a big thing, but some people need and want that. 1) https://docs.microsoft.com/en-us/ef/ https://docs.microsoft.com/en-us/ef/ 2) https://hibernate.org/ https://hibernate.org/ 3) https://dapper-tutorial.net/ https://dapper-tutorial.net/