How do I seed my EF database?

How do I seed my EF database?

Entity Framework’s Database Seed Method

1. Step 1: Create a New Project.
2. Step 2: Install EF5 from NuGet.
3. Step 3: Create a Model.
4. Step 4: Create DbContext.
5. Step 5: Database Initializer (Dummy Data)
6. Step 6: Seed Dummy Data to Database.
7. Step 6: Complete Code.
8. Step 7: MVC Apps.

What is a data Seed?

Seed data is information that is loaded to enable a function or program to work correctly. If a function queries an empty database, for example, it will not produce useful output. If the database is “seeded” with data, the function will generate meaningful results. Seed data is often used for testing purposes.

What is seeding in Entity Framework?

Data seeding is the process of populating a database with an initial set of data. There are several ways this can be accomplished in EF Core: Model seed data. Manual migration customization. Custom initialization logic.

What is a DbContext class?

The DbContext class is an integral part of Entity Framework. An instance of DbContext represents a session with the database which can be used to query and save instances of your entities to a database. DbContext is a combination of the Unit Of Work and Repository patterns.

How do you run an EF migration?

Open the Package Manager Console from Tools → Library Package Manager → Package Manager Console and then run the enable-migrations command (make sure that the default project is the project where your context class is).

What is a database seed file?

Database seeding is the initial seeding of a database with data. Seeding a database is a process in which an initial set of data is provided to a database when it is being installed. The data can be dummy data or necessary data such as an initial administrator account.

What is a seed script?

A script that populates your database with a set of test data. It can be as simple as a bunch of INSERT statements, or something much more elaborate.

What is reseeding database?

The reseed-database command enables you to reseed a passive database copy that is in a failed state and restore the copy (using the latest local Snapshot copy; an archived copy cannot be used) to a healthy state.

What is seed data in SQL Server?

The term seed refers to the internal value SQL Server uses to generate the next value in the sequence. By default, an identity column’s first value is 1 and each new value increments by one (1, 2, 3, 4, and so on). For instance, you might reseed a column after deleting records or moving data to an archive table.

What is the difference between ObjectContext and DbContext?

DbContext is nothing but a ObjectContext wrapper, we can say it is a lightweight alternative to the ObjectContext….ObjectContext VS DBContext.

ObjectContext	DbContext
ObjectContext can be used by Entity Framework 4.0 and below.	DBContext can be used by Entity Framework 4.1 and above.

When should I run drupaldbinitializer?

DbInitializer should run after the application has started, and before the user starts using it. Because we also want to be able to seed a database with other data while testing, the database can’t be initialized in Startup.

What is schooldbinitializer in Salesforce?

In the above example, the SchoolDBInitializer is a custom initializer class that is derived from CreateDatabaseIfNotExists . This separates the database initialization code from a context class. You can also set the db initializer in the configuration file. For example, to set the default initializer in app.config:

What is the best fertilizer for seedlings?

Seedlings will benefit from a mild dose of either a balanced fertilizer (an equal part of N-P-K) or a fertilizer with higher Nitrogen and Potassium (e.g., 5-2-3, or 3-1-2). The fertilizer can be organic or non-organic, depending upon your choice of gardening philosophy.