Database star;


Table sub;
id
suptab
subtab

Table tab;
id
name
abs
X
X
false
Y
Y
false
Z
Z
false
W
W
false
C
C
false

Table assoc;
id
name
class1
role1
atype1
min1
max1
class2
role2
atype2
min2
max2
xc
xc
X
x
BLANK
0
32001
C
cx
BLANK
0
32001
yc
yc
Y
y
BLANK
0
32001
C
cy
BLANK
0
32001
zc
zc
Z
z
BLANK
0
32001
C
cz
BLANK
0
32001
wc
wc
W
w
BLANK
0
32001
C
cw
BLANK
0
32001

Table attr;
id
name
ptype
attrof
X_id
id
str
X
X_x1
x1
str
X
Y_id
id
str
Y
Y_y1
y1
str
Y
Z_id
id
str
Z
Z_z1
z1
str
Z
W_id
id
str
W
W_w1
w1
str
W
C_id
id
str
C
C_c0
c0
str
C
C_D_d1
D_d1
str
C

Table cons;
id
name
constraint