DBContect Structure if you want without migration

public partial class DataDbContext : DbContext
    {
        static DataDbContext()
        {
            Database.SetInitializer<DataDbContext>(null);
        }

        public DataDbContext() :base("name=DataEntities")
        {
           
        }
        public DbSet<CustomerInfo> CustomerInfo { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
        }

    }