What should be added to the SELECT clause when modifying a SQL view to include department names?

To include department names when modifying a SQL view, the correct choice is to use "Department.Deptname." This notation specifies that you want to select the column named "Deptname" from the "Department" table. In SQL, referencing a column using the format "TableName.ColumnName" helps clarify which specific table the column belongs to, especially when dealing with multiple tables that may have similar column names.

In this case, it correctly indicates that the "Deptname" column is part of the "Department" table, ensuring that the SQL statement retrieves the intended data without ambiguity. This specificity is crucial in environments with complex queries involving joins or multiple sources of data, preventing confusion and potential errors in data retrieval.

The other options do not correctly identify the table for the "Deptname" column. While "DeptName" might seem appropriate, it lacks the necessary table reference, which can lead to issues if there are similarly named columns elsewhere. "Department.Name" potentially indicates the wrong column since it suggests a different naming convention that does not accurately reflect the existing database schema. Lastly, "DeptCode" is unrelated to what the question specifies as it refers to a different attribute altogether, not pertaining to department names.