Jam e s River J ewe l ry Proje c t Qu e s t i o n s f o r Ch a p t e r 6 The J a m es R i ver Je w elry d atab a se d esi g n that was u s e d in the Ja m e s Riv e r J e we lr y P r o ject Qu e sti on s f o r C hap ter 3 in t h is A p p en d ix was: CU S TO M ER ( C u st o m e rI D , L a st N a me, Fi r s t N a me, P hone , Em ai l) PUR C H ASE ( I n v o i c e N u mb e r , I n v o i c e D a te, Pr e T a x Am o un t, C u st o me r I D ) PUR C H ASE _ I T EM ( I n v o ic e N u m b e r , I tem Nu m b e r , R e t a ilP r i c e ) ITEM ( Ite m N u mb e r , De s c ri p t i on , C o s t, A r t is t N a me) The re f erential integ r i t y co n strai n ts ar e : C u st o me r ID in P U R C H ASE must e x i st in C u st o me r ID i n C U S TO M E R I n v o i c e N u mb e r i n PU R CH AS E_I T EM m u st e x i st in I n v o i c e N u mb e r in PU R C H ASE Ite m N u mb e r in P U R C H AS E _ I TEM m u st e x i st in I tem N u mb e r i n I T EM J ames Ri v er J e welry has m o d if i ed the data b ase by a d d i n g two tab l e s — O W N ER a n d JEWE L R Y_IT E M — as shown be l o w: O W NER ( O w ne rI D , L a st N a me, F i rs t N a me, Ph o ne , E ma il, Am oun tOw e d ) J EWELRY _I TEM ( It e m N u m be r , D a teR e c e i v ed , D a te S o l d , N e g o t i a te dSa l e s P r i c e , A c t u a l Sa l e sP r i c e , C o m m i s s i on Perc en t a g e , Ow n e r I D ) where Own e r I D i n JE W EL R Y_ I T E M m u st e x ist in O w ne r I D i n O W NER Ite m N u mb e r in JE W E L RY _I TEM m u st e x i st in I te m N u mb e r i n I TEM The tab l e s are used t o r e co rd data and m ai n tain o wn e r data a b o u t j e wel r y a c cep t ed o n c o n si g n ment. J EWEL R Y_I T EM (w h ich is a su b ty p e o f I T E M — n o te t h e refe r ential integ r i ty c o n s t r ai n t) is u sed to re c o rd the ne g o tia t ed sales pr i ce, the c o m miss i o n pe r centa g e, a n d t h e act u al sales pr i c e for each i t e m o f c o n si gn ed j e wel r y. Ass u me t h at o ff i c e p er s o n n el at J a mes Ri v er J e wel r y u se a data b a se a pp l i c a ti o n t o r e c o rd c o n si g n ment d ata. When an i t e m is re c ei v ed o n c o n si gn m ent, o wn e r data are s t o red in OWN E R if t h e o wner is ne w ; o the r wise exi s ti n g o wner d ata are u sed. N e w IT E M a n d JEWE L R Y_I T EM r o ws a r e creat e d . In I TE M , Ite m N u m b er a n d De s cri p t i o n are re c o r d ed, C o s t is s et to $ 0. 0 0, and if t h ere i s an artist as s o ci a ted with the pie c e, A r ti s tN a m e is e n tered. F o r JE W EL R Y_IT E M, d ata are st o red f o r all c o l u m n s e xc e p t D a te S o ld a n d Actua l S a le s Price. J a m e s Ri v er J e welry per s o nn el r efer t o these act i o n s as an Accepta n ce Tra n .

1. Jam
e
s River
J
ewe
l
ry
Proje
c
t
Qu
e
s
t
i
o
n
s f
o
r
Ch
a
p
t
e
r
6
The

2. J
a
m
es
R
i
ver
Je
w
elry
d
atab
a
se
d
esi
g
n
that
was
u
s
e
d
in
the
Ja
m
e

3. s
Riv
e
r
J
e
we
lr
y
P
r
o
ject Qu
e
sti
on
s
f
o
r
C
hap
ter
3
in
t
h
is A
p
p

4. en
d
ix
was:
CU
S
TO
M
ER
(
C
u
st
o
m
e
rI
D
,
L
a
st
N
a
me,
Fi
r
s
t
N
a
me,

5. P
hone
,
Em
ai
l)
PUR
C
H
ASE
(
I
n
v
o
i
c
e
N
u
mb
e
r
,
I
n
v
o
i
c
e

6. D
a
te,
Pr
e
T
a
x
Am
o
un
t,
C
u
st
o
me
r
I
D
)
PUR
C
H
ASE
_
I
T
EM
(
I
n
v

7. o
ic
e
N
u
m
b
e
r
,
I
tem
Nu
m
b
e
r
,
R
e
t
a
ilP
r
i
c
e
)
ITEM
(
Ite
m

8. N
u
mb
e
r
,
De
s
c
ri
p
t
i
on
,
C
o
s
t,
A
r
t
is
t
N
a
me)
The re
f
erential
integ

9. r
i
t
y
co
n
strai
n
ts
ar
e
:
C
u
st
o
me
r
ID
in
P
U
R
C
H
ASE
must
e
x
i
st

10. in
C
u
st
o
me
r
ID
i
n
C
U
S
TO
M
E
R I
n
v
o
i
c
e
N
u
mb
e
r
i
n
PU
R

11. CH
AS
E_I
T
EM
m
u
st
e
x
i
st
in
I
n
v
o
i
c
e
N
u
mb
e
r
in
PU
R
C
H
ASE Ite

12. m
N
u
mb
e
r
in
P
U
R
C
H
AS
E
_
I
TEM
m
u
st
e
x
i
st
in
I
tem
N
u
mb
e
r

13. i
n
I
T
EM
J
ames
Ri
v
er
J
e
welry
has
m
o
d
if
i
ed the
data
b
ase
by
a
d
d
i
n

14. g
two
tab
l
e
s
—
O
W
N
ER
a
n
d
JEWE
L
R
Y_IT
E
M
—
as
shown
be
l
o
w:
O
W
NER

15. (
O
w
ne
rI
D
,
L
a
st
N
a
me, F
i
rs
t
N
a
me,
Ph
o
ne
,
E
ma
il,
Am
oun
tOw
e
d
)

16. J
EWELRY
_I
TEM
(
It
e
m
N
u
m
be
r
,
D
a
teR
e
c
e
i
v
ed
,
D
a
te
S
o
l
d
,

17. N
e
g
o
t
i
a
te
dSa
l
e
s
P
r
i
c
e
, A
c
t
u
a
l
Sa
l
e
sP
r
i
c
e
,
C
o

18. m
m
i
s
s
i
on
Perc
en
t
a
g
e
,
Ow
n
e
r
I
D
)
where
Own
e
r
I
D
i
n
JE
W
EL
R
Y_

19. I
T
E
M
m
u
st
e
x
ist
in
O
w
ne
r
I
D
i
n
O
W
NER
Ite
m
N
u
mb
e
r
in

20. JE
W
E
L
RY
_I
TEM
m
u
st
e
x
i
st
in
I
te
m
N
u
mb
e
r
i
n
I
TEM
The tab
l
e
s are

21. used
t
o
r
e
co
rd
data and
m
ai
n
tain
o
wn
e
r data a
b
o
u
t j
e
wel
r
y a
c
cep
t
ed
o
n

22. c
o
n
si
g
n
ment.
J
EWEL
R
Y_I
T
EM
(w
h
ich
is
a
su
b
ty
p
e
o
f I
T
E
M
—
n
o

23. te
t
h
e
refe
r
ential
integ
r
i
ty
c
o
n
s
t
r
ai
n
t) is
u
sed
to
re
c
o
rd the ne
g
o
tia

24. t
ed sales
pr
i
ce,
the
c
o
m
miss
i
o
n
pe
r
centa
g
e,
a
n
d
t
h
e
act
u
al
sales pr
i

25. c
e for
each
i
t
e
m
o
f
c
o
n
si
gn
ed j
e
wel
r
y.
Ass
u
me
t
h
at
o
ff
i
c
e

26. p
er
s
o
n
n
el at J
a
mes
Ri
v
er
J
e
wel
r
y
u
se
a data
b
a
se
a
pp
l
i
c
a
ti
o
n

27. t
o
r
e
c
o
rd
c
o
n
si
g
n
ment
d
ata. When an
i
t
e
m
is
re
c
ei
v
ed
o
n
c

28. o
n
si
gn
m
ent,
o
wn
e
r data are
s
t
o
red in
OWN
E
R if t
h
e
o
wner is
ne
w
;
o
the
r
wise
exi
s

29. ti
n
g
o
wner
d
ata are
u
sed.
N
e
w
IT
E
M a
n
d
JEWE
L
R
Y_I
T
EM
r
o
ws
a
r
e
creat
e

30. d
. In
I
TE
M
, Ite
m
N
u
m
b
er a
n
d
De
s
cri
p
t
i
o
n
are
re
c
o
r
d
ed,
C
o
s

31. t is
s
et
to
$
0.
0
0, and
if t
h
ere
i
s an
artist as
s
o
ci
a
ted
with the pie
c
e,
A
r
ti
s
tN
a
m

32. e is
e
n
tered.
F
o
r JE
W
EL
R
Y_IT
E
M,
d
ata are
st
o
red
f
o
r all
c
o
l
u
m
n
s
e
xc
e

33. p
t
D
a
te
S
o
ld a
n
d
Actua
l
S
a
le
s
Price.
J
a
m
e
s Ri
v
er
J
e
welry
per
s
o
nn
el
r

34. efer
t
o
these
act
i
o
n
s as
an
Accepta
n
ce Tra
n
sact
i
o
n
. La
t
er, if
t
h
e
j
e
welry
it
e
m

35. d
o
es
not
sel
l
,
t
h
e
N
eg
o
tiate
d
S
a
l
es
P
r
i
ce
a
n
d C
o
mmi
s
sio
n

36. Per
c
enta
g
e
va
l
u
es
m
a
y
b
e red
u
ced.
This is
cal
l
ed a
Pri
c
e A
d
j
u
s
t
ment
Tra

37. n
sact
i
o
n
. F
in
al
l
y, when an
i
t
em
sel
l
s,
t
h
e
Da
t
eSold
and
A
c
tua
l
S
a
les

38. P
rice
fiel
d
s f
o
r
t
h
e
i
t
e
m
a
r
e
g
i
ve
n
v
al
u
es,
and
t
h
e Am
o

39. un
t
O
w
ed
v
al
u
e
in
OW
N
ER is u
p
d
ated
b
y incre
a
s
i
n
g
A
mo
un
t
Owed
by
t
h

40. e
o
wner
'
s per
c
enta
g
e
o
f
the Act
u
al
S
ales
P
rice
val
u
e.
This
t
h
ird
tra
n
sa
c
ti

41. o
n
is
cal
l
ed
a Sa
l
es
T
r
a
n
sact
i
o
n
.
A.
Expla
i
n
w
h
y
it

42. is
i
m
p
o
rta
n
t
for t
h
e ch
ang
es
ma
d
e
b
y
e
ach
o
f
these
tra
n
sa
c
ti
o
n
s

43. t
o
be
at
o
mic.
B.
Descri
b
e a
s
cenar
i
o
in wh
i
c
h
an u
p
d
ate
o
f
A
m
o

44. un
t
Ow
ed c
o
u
ld
b
e l
o
st.
C.
Descri
b
e a
s
cenar
i
o
f
o
r a
n
o
n
repe
a
tab
l
e
r
e

45. ad
and
a s
c
ena
r
io
f
o
r a
p
h
a
n
t
o
m
r
ead.
D.
Expla
i
n
how
l
o
cking

46. c
o
u
ld
b
e
u
sed
t
o
pr
e
ve
n
t the
l
o
s
t
u
p
d
ate in
y
o
u
r an
s
wer
to

47. p
art B.
E.
Is it
p
o
s
si
b
le
f
o
r dea
d
l
o
ck
t
o
o
ccur
b
e
t
w
een
t
wo
A
c
ce
p

48. tance Tra
n
s
a
ct
i
o
n
s?
Why
o
r w
h
y
n
o
t?
Is it
p
o
ssi
b
le
f
o
r d
e
a
d
lo
c
k
t

49. o
o
c
c
u
r bet
w
een
t
w
o
Sales
Tr
a
n
sacti
o
n
s
? W
h
y
o
r w
h
y
n
o
t
? Is it

50. possi
b
l
e for dea
d
l
o
ck
t
o
o
ccur
b
e
t
w
een
an A
c
ceptan
c
e Tra
n
s
ac
ti
o
n
and
a S
a
l

51. es
T
ra
n
sact
i
o
n
? W
h
y
o
r
w
h
y
n
o
t?
F.
For e
a
ch
o
f
t
h
e
s
e th

52. r
ee
t
y
p
es
o
f
tra
n
sa
c
ti
o
n
,
descri
b
e
whet
h
er
y
o
u
t
h
i
n
k

53. o
p
t
i
mis
t
ic
o
r
p
essi
m
i
s
tic
l
o
cking
w
o
u
ld
b
e
b
et
t
er.
E
xp
l
ain
t

54. h
e
r
ea
so
n
s f
o
r
y
o
u
r
answ
e
r.
G.
S
u
pp
o
se
J
a
m
es
River
Je
w

55. e
l
ry
i
d
entif
i
e
s t
h
r
e
e
g
r
o
up
s of
users:
m
a
n
a
g
ers, a
d
mi
n
is
t
rative
p
ers

56. o
nn
el,
a
n
d
s
y
s
t
e
m
a
d
mi
n
istra
t
o
rs.
Supp
o
se
f
u
rt
h
er that
ma
n
a

57. g
ers a
n
d
a
d
m
i
n
istrati
v
e
p
ers
o
nn
el
can
per
f
o
r
m
Ac
c
epta
n
ce
Tra
n
sact

58. i
o
n
s and
S
ales Tra
n
s
a
ct
i
o
n
s, b
u
t
o
n
ly
ma
n
a
g
ers
can
p
erf
o
r
m
Price

59. A
d
j
u
st
m
ent
Tra
n
sact
i
o
n
s.
D
escri
b
e
pr
o
cessi
n
g
ri
gh
ts
that
y
o
u

60. th
in
k
w
o
u
ld
be a
pp
ro
p
ri
a
te
f
o
r
th
i
s sit
u
at
i
o
n
. Use
Fi
g
u
re
6
-

61. 16
as an
e
xa
m
p
le.
H.
J
ames
Ri
v
er
J
e
welry
has d
e
ve
l
o
p
ed the
f
o
l
l
o
wing

62. p
r
o
c
ed
u
re for
backup
and
r
e
co
ve
r
y. The c
o
m
p
a
n
y ba
c
ks
u
p
t
h
e
d
at
a

63. b
ase fr
o
m
the
s
er
v
er
t
o
a
s
ec
o
n
d
co
m
pu
ter
o
n
i
ts
n
et
w
o
rk

64. each
n
i
gh
t. O
n
ce
a
m
o
n
th, it
c
o
p
ies t
h
e
data
b
ase
t
o
a
C
D
a
n
d
st

65. o
r
es
it
at a
m
a
n
a
g
er's
h
o
u
se. It
k
e
e
p
s
p
a
p
er re
c
o
r
d
s
o
f all

66. pu
rc
h
a
se
a
n
d
sal
e
s tra
n
s
a
cti
o
n
s
f
o
r an entire
y
ear. If it
e
ver
l
o
ses
its
d

67. atab
a
se,
it
pl
an
s
t
o
r
e
s
t
o
r
e it f
r
o
m
a
b
a
c
kup
and
u
n
rec
o
r

68. d
ed transa
c
ti
o
n
s.
D
o
y
o
u
t
h
i
n
k
th
i
s
b
ackup
and
re
c
o
v
ery
pro

69. g
r
am
is
suff
i
cient
for J
a
m
e
s
R
iv
e
r J
e
wel
r
y?
What
pro
b
l
e
ms
mi
gh
t

70. o
ccu
r
? What al
t
ern
a
ti
v
es
exis
t
?
D
escri
b
e a
n
y c
h
a
ng
es
y
o
u
t
h
i
n
k the
co
m
p

71. a
n
y
should
m
ake
t
o
th
i
s syst
e
m.