What is ObjectContext in entity framework?
ObjectContext is a class that manages all database operations, such as database connection, and manages various entities in the entity model. We can say that ObjectContext is the main class to access or work together with entities defined in the conceptual model.
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What is object context in C#?
The ObjectContext class is the main class for interacting with data as objects that are instances of entity types that are defined in a conceptual model. An instance of the ObjectContext class encapsulates the following: A connection to the database, in the form of an EntityConnection object.
Which method of the ObjectContext class is used to persist all updates to the data source in the Entity Framework?
Save Changes
SaveChanges(SaveOptions) Saves all updates to the data source with the specified SaveOptions.
What is DbContext and DbSet?
Intuitively, a DbContext corresponds to your database (or a collection of tables and views in your database) while a DbSet corresponds to a table or view in your database.
What is EntityClient System Data?
The EntityClient provider uses storage-specific ADO.NET data provider classes and mapping metadata to interact with entity data models. EntityClient translates operations performed on conceptual entities into operations performed on physical data sources.
How to add an object to the object context?
Adds an object to the object context. Copies the scalar values of the provided object to the object in the ObjectContext that has the same key. Copies the scalar values of the provided object to a set of original values for the object in the ObjectContext that has the same key.
What is an instance of the ObjectContext class?
An instance of the ObjectContext class encapsulates the following: A connection to the database, in the form of an EntityConnection object. Metadata describing the model, in the form of a MetadataWorkspace object.
How do you derive the entity container from the ObjectContext?
Metadata describing the model, in the form of a MetadataWorkspace object. An ObjectStateManager object that manages the objects that are kept in the cache. When the entity data model tools generate the object layer that represents a conceptual model, the class that represents the EntityContainer for the model is derived from the ObjectContext.
What do I need to know about object context options?
Gets the ObjectContextOptions instance that contains options that affect the behavior of the ObjectContext. Gets or sets the name of the default container. Gets the metadata workspace used by the object’s context. Gets the object’s state manager used by the object’s context to track changes to the object.