How to disable migrations for existing databases

How do you disable migrations for existing databases in code?

Previously I used this in the DbContext constructor: Database.SetInitializer<ApplicationDbContext>(null);

[bricelam]

EF7 will never automatically create or alter your database schema. Users will need to explicitly call one of the following to do that.

context.Database.EnsureCreated();
context.Database.Migrate();

[Seabizkit]

@sheinema could you share how you have urs setup, as if i dont create migrations, when i say update database, it just creates it blank instead of creating tables.