UserConfiguration.cs

using Microsoft.EntityFrameworkCore.Metadata.Builders;
namespace Demo.Configurations {
public sealed class UserConfiguration : IEntityTypeConfiguration<User>
{
    	public void Configure(EntityTypeBuilder<User> builder) {
    		builder.ToTable("UsersTbl");
    		builder.HasKey(u => u.Id);
    		builder.Property(u => u.FirstName).IsRequired();
    		builder.Property(u => u.LastName).IsRequired();
    	}
    }
}