Final answer:
A column in a relational table must have a data type, a unique name, is typically derived from an entity in conceptual design, and is the smallest unit of storage in a database, often labeled with Quantity/units for clarity.
Step-by-step explanation:
A column in a relational table indeed must be assigned a data type, must be given a unique name within the table, and is typically derived from an entity attribute in the conceptual design. It is also the smallest named unit of storage in a relational database and may include labels in the format Quantity/units to indicate units and help interpret the data contained within the table. While the question does not pertain to a comparison of two tables or switching between tables directly, understanding the structure and labeling of columns within a table is essential to effectively organizing and interpreting data.
A column in a relational table must be assigned a data type, must be assigned a unique name within the table, is derived from an entity in the conceptual design, and is the smallest named unit of storage in a relational database. Option 4) Is the smallest named unit of storage in a relational database is correct. A column represents a single attribute or characteristic of the entities in the table, and it holds the actual data stored in the database.