Which of the following would likely be an attribute?

• A. Last Number of Days
• B. Equal to (=)
• C. Greater than (x)
• D. Purchase Order Date

Answer: (D)

An attribute is a data element that describes a characteristic of an entity, usually stored as a field in a table. Purchase Order Date fits this role because it records a specific piece of information about each purchase order—the date the order was created. In contrast, Last Number of Days is typically a function or parameter used to compute a date range, not a stored property of the order. Equal to and Greater than are operators used to compare values in filters or expressions, not data fields themselves. Therefore, Purchase Order Date is the attribute.