1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
1
00:00:00,110 --> 00:00:03,090
Now that we talked about requirements prioritization, let's try to see
2
00:00:03,090 --> 00:00:06,110
how this might work in practice. Imagine that you have collected the
3
00:00:06,110 --> 00:00:09,560
folowing set of five requirements for an ATM system, but only
4
00:00:09,560 --> 00:00:12,680
have resources to satisfy two of them. Possibly three. I would like
5
00:00:12,680 --> 00:00:15,550
for you to look at this list and suitablely prioritize the
6
00:00:15,550 --> 00:00:19,220
requirements by marking them as mandatory, in this case you're going to put
7
00:00:19,220 --> 00:00:21,840
an M in the space. Nice to have, in this case you're
8
00:00:21,840 --> 00:00:25,350
going to put an N. Or superfluous, in this case you're going to put
9
00:00:25,350 --> 00:00:28,005
an S. This is the set of requirements, the first one
10
00:00:28,005 --> 00:00:30,342
says that the system shall check the PIN of the ATM
11
00:00:30,342 --> 00:00:33,863
card before allowing the customer to perform an operation. The second
12
00:00:33,863 --> 00:00:37,575
says that the system shall perform an additional biometric verification of
13
00:00:37,575 --> 00:00:40,881
the customer identity for example a check of the customer's finger
14
00:00:40,881 --> 00:00:44,294
prints before it allows the customer to perform an operation. Then
15
00:00:44,294 --> 00:00:47,466
we have that the system shall allow customers to withdraw cash
16
00:00:47,466 --> 00:00:50,580
using an ATM card. The system shall allow customer to deposit
17
00:00:50,580 --> 00:00:53,350
money using an ATM card. And the system shall allow
18
00:00:53,350 --> 00:00:56,330
customers to change the pin of their ATM card. So again,
19
00:00:56,330 --> 00:01:00,600
mark those as mandatory, nice to have, or superfluous considering the
20
00:01:00,600 --> 00:01:04,170
fact that you can satisfy only two, possibly three of them.
|