Bus system analysis

Look around your house, apartment, or dorm room.  Pick an object that you might want to store information about for some reason.  Perhaps you would be in business to sell, repair, or collect it.  Now think of six attributes of that object that you would want to store which would be useful in describing it to potential buyers, owners, or collectors.  Create a word table with the following headings:  Element Name, Description, Data Type, Data Rules.  List your six attributes, making an appropriate entry in each column.  The data rules could be simple, such as 'Non-Negative' if you are storing the weight of something.  If by its nature a data element has only a few values (such as 'operating system' for a computer) you could enter 'pick from lookup table' as a data rule.  In this case, show your lookup table as a one-column table below your main table and include some representative values.  Due before noon next Monday.