Renaming a Column
The name of a column in a table in your database diagram shows the name of the column as it is stored in the database. You can rename a column directly in your table in the database diagram and the database will be updated with the new name when you save the table or diagram.
Column names are stored in the case (uppercase or lowercase) in which they appear in your diagram.
Caution Renaming a column may affect triggers , stored procedures , and constraints . Consider renaming a column before you create these other objects. For more information about these database objects, see Database Objects.
To rename a column
In your database diagram, select the table whose column you want to rename.
If only the table name is shown in the database diagram, right-click the table and select Standard, Column Names, or Keys from the shortcut menu.
In the cell that shows the column name you want to change, type a new column name.
The column is renamed in your table or diagram as soon as you exit the cell that shows the column name. The column is renamed in your database when you save the table or diagram.