Final answer:
The statement is false; a column heading's length does not affect the truncation of data stored within the column, which is determined by the column's defined data type and length.
Step-by-step explanation:
The statement that a column heading that is longer than the width of a column will not be truncated for a column that is defined to store character data is false. In the context of databases, a column's physical storage space is determined by its data type and length specification, not by the length of its name or heading. The data within a character column can be truncated if it exceeds the specified length for the column when attempting to store it, but the column heading or name itself is a separate aspect and will typically not impact the storage of data.