Explain the need for each of the actions in Figure 6-28(a). Explain the need for each of the actions in Figure 6-28(b). State which of the actions in Figure 6-28 must be applied for M-O...

Explain the need for each of the actions in Figure 6-28(a).

Explain the need for each of the actions in Figure 6-28(b).

State which of the actions in Figure 6-28 must be applied for M-O relationships, O-M

relationships, and M-M relationships.