The relational database below contains two related tables - “Supplier” and “Product”: “Product” table: Primary key = Prod-code, Foreign key = Supp-code Prod-code Prod -name Prod -desript Prod -stocktype Prod -stocklevel Prod -expireDate Supp-code 10010 aaa qwert 615 123445677 2017-11-14 501 10011 bbb asdfgg 615 234567899 2017-11-16 501 10012 ccc zxxcvv 234 345678900 2017-11-13 502 10013 eee ytuytu 234 454577777 2017-10-13 503 10014 jjj werewr 231 436436885 2017-10-23 503 10015 sdg rtyrtyry 275 676446322 2017-10-30 504 10016 ewt erterter 789 232317879 2017-12-30 501 “Supplier” table: Primary key = Supp -code, No Foreign key Supp -code Supp -lname Supp -fname Supp -Initial Supp -areacode Supp -phone 501 xxx qwert F 615 123445678 502 yyy asdfgg B 615 234567890 503 zzz zxxcvv X 234 345678901 The above database contains an error in the data. Identify and describe this error.
The relational
“Product” table: Primary key = Prod-code, Foreign key = Supp-code
Prod-code |
Prod -name |
Prod -desript |
Prod -stocktype |
Prod -stocklevel |
Prod -expireDate |
Supp-code |
10010 |
aaa |
qwert |
615 |
123445677 |
2017-11-14 |
501 |
10011 |
bbb |
asdfgg |
615 |
234567899 |
2017-11-16 |
501 |
10012 |
ccc |
zxxcvv |
234 |
345678900 |
2017-11-13 |
502 |
10013 |
eee |
ytuytu |
234 |
454577777 |
2017-10-13 |
503 |
10014 |
jjj |
werewr |
231 |
436436885 |
2017-10-23 |
503 |
10015 |
sdg |
rtyrtyry |
275 |
676446322 |
2017-10-30 |
504 |
10016 |
ewt |
erterter |
789 |
232317879 |
2017-12-30 |
501 |
“Supplier” table: Primary key = Supp -code, No Foreign key
Supp -code |
Supp -lname |
Supp -fname |
Supp -Initial |
Supp -areacode |
Supp -phone |
501 |
xxx |
qwert |
F |
615 |
123445678 |
502 |
yyy |
asdfgg |
B |
615 |
234567890 |
503 |
zzz |
zxxcvv |
X |
234 |
345678901 |
The above database contains an error in the data. Identify and describe this error.
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