This appendix provides answers to review questions throughout the book.
1. If the layout of records in a flat file data management system changes, what else must change?
Answer: Data access programs will have to change.
2. What kind of relation is supported in a hierarchical data management system?
d. No relations are allowed.
Answer: A. Parent-child relations are supported in hierarchical data management systems.
3. What kind of relation is supported in network data management systems?
c. Both parent-child and many-to-many
d. No relations are allowed
Answer: C. Both parent-child and many-to-many relations ...