See C. J. Date, An Introduction to Database Systems 6th edition, (Reading, 1995) p. 146. a#39;This belongs ... In my opinion, some research is needed to find out the most suited solution for historical data entry. I have preferred ... 13 R. Elmasri and S. B. Navathe, Fundamentals of Database Systems (Redwood City, 1989), p. 198 .
|Title||:||History & Computing|