Databases Reference
In-Depth Information
Time
Time can be modeled in several different ways in the graph. Here we describe two
techniques: timeline trees and linked lists.
Timeline trees
If we need to find all the events that have occurred over a specific period, we can build
a timeline tree, as shown in
Figure 4-6
.
Figure 4-6. A timeline tree showing the broadcast dates for four episodes of a TV
program
