Chapter 9

1. 1. [b, d] Each custom type can have 0 or 1 supertype. Custom types cannot be supertypes of the built-in types.

2. 2. [a, c] dm_document is a built-in object type and cannot be modified.

3. 3. [d]

4. 4. [c]

5. 5. [b] Since the my_invoice only has single-valued properties of its own, it will only use one table my_invoice_s.

6. 6. [False] Even though types cannot be versioned, the changes still need to be committed via checkin.

7. 7. [False] The Content Server does not enforce constraints. In fact, it doesn't use data dictionary for its own functionality.

8. 8. [False] The length of a property is used only if the property is of type String.

9. 9. [True] Multiple conditional lists and one default list can be specified for one property.

10. 10. [a, c] The object type can only be changed to the immediate supertype or a subtype of the current type.