EF4 Computed columns in SQL Server not visible

I have an SQ开发者_C百科L server table with one computed column based on 2 other columns on the same table. I have a WCF application in C# that uses EF4 to access the said table.In EF4 the entity corresponding to the said table is missing property(attribute) for the computed column.I tried to refresh the EF Model from the database but to no avail. Is there a limitation in EF where you cannot access a computed column