The document details the database design and transaction management for the James River Jewelry project, highlighting the necessary tables, relationships, and integrity constraints required to manage customer and jewelry item data effectively. It outlines processes for handling consignments, including acceptance, price adjustments, and sales transactions, emphasizing the importance of atomic transactions to prevent data loss. Additionally, it discusses user roles, permissions, and the backup and recovery procedures implemented by the company.

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.