使用MVC5更新EF5中的Db

I am working on a project using Entity Framework 5 with MVC5. My Project is currently running. I am trying to add a column in a table. But as we know that in EF when we add a field in model it drop and recreate the database, which i can`t do. One method for this is found code migration. But my manager is not allow me to use that(because its a big database project).I am working on a project using Entity Framewor