entity framework - MVC 4 ADO.net DatabaseFirst working with database -


i writing project on asp.net mvc 4. database project not designed, , modification or addition of new tables in database done campaign work. use ado.net ef databasefirst. during work needed additional properties store information have ordered in class fields of database. after that, need add new table, of follow-up in class fields disappeared after model update ado.net. knows how safely modify model no change of work done?? in advance.


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