protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.CreateUniqueIndex<Photo>(i => i.Url);
modelBuilder.CreateUniqueIndex<Department>(i => i.Name);
modelBuilder.CreateUniqueIndex<Category>(i => i.Name);
modelBuilder.CreateUniqueIndex<Product>(i => i.Name);
base.OnModelCreating(modelBuilder);
}
