Contents
- 1 Does Entity Framework support inheritance?
- 2 Which class do we inherit from while interacting with the Entity Framework?
- 3 Which is best approach in Entity Framework?
- 4 How to use inheritance in Entity Framework 6?
- 5 Which is the default inheritance mapping strategy in EF 6?
- 6 How are tables created in concrete Entity Framework?
Does Entity Framework support inheritance?
Entity Framework Code First Mapping for TPH By default, Entity Framework supports TPH inheritance, if you don’t define any mapping details for your inheritance hierarchy.
Which class do we inherit from while interacting with the Entity Framework?
The class that derives DbContext is called context class in entity framework. DbContext is an important class in Entity Framework API. It is a bridge between your domain or entity classes and the database. DbContext is the primary class that is responsible for interacting with the database.
What is discriminator entity framework?
The Entity Framework Core Fluent API HasDiscriminator method is used to configure aspects of the discriminator column in a table that represents an inheritance hierarchy. By convention, a discriminator column will be configured to use a string data type will be named “Discriminator”.
Which is best approach in Entity Framework?
As in this diagram, if we already have domain classes, the Code First approach is best suited for our application. The same as if we have a database, Database First is a good option. If we don’t have model classes and a database and require a visual entity designer tool then Model First is best suited.
How to use inheritance in Entity Framework 6?
Inheritance Strategy in Entity Framework 6 We have seen in the Code-First Conventions section that EF creates database tables for each concrete domain class. However, you can design your domain classes using inheritance.
How to remove a type from an inheritance in EF?
If you don’t rely on conventions, you can specify the base type explicitly using HasBaseType. You can also use .HasBaseType ( (Type)null) to remove an entity type from the hierarchy. By default, EF maps the inheritance using the table-per-hierarchy (TPH) pattern.
Which is the default inheritance mapping strategy in EF 6?
Table per Hierarchy (TPH): This approach suggests one table for the entire class inheritance hierarchy. The table includes a discriminator column which distinguishes between inheritance classes. This is a default inheritance mapping strategy in Entity Framework. Table per Type (TPT): This approach suggests a separate table for each domain class.
How are tables created in concrete Entity Framework?
Entity Framework code first creates tables for each concrete domain class. You can also design your domain classes using inheritance. In Object-oriented programming, we can include “has a” and “is a” relationship, whereas in a SQL-based relational model we have only a “has a” relationship between tables and there is no support for type inheritance.