Invalid table name without using a reserved word? - sql

Question

I'm creating a table using Oracle SQL, and when trying to create a table called 'Card' I keep getting the error that it's an invalid table name. Here's my code:
CREATE TABLE Card
(
CardNumber varchar2(20) Not Null,
CardType varchar2(5) Not Null,
CONSTRAINT CustomerIDForeignKey FOREIGN KEY (CustomerID) REFERENCES (Customer),
CONSTRAINT CardTypeConstraint CHECK (CardType='Credit' or CardType='Debit' or CardType='Gift')
)
And here's the error code I'm getting:
Error starting at line : 1 in command -
CREATE TABLE Card
(
CardNumber varchar2(20) Not Null,
CardType varchar2(5) Not Null,
CONSTRAINT CustomerIDForeignKey FOREIGN KEY (CustomerID) REFERENCES (Customer),
CONSTRAINT CardTypeConstraint CHECK (CardType='Credit' or CardType='Debit' or CardType='Gift')
)
Error report -
SQL Error: ORA-00903: invalid table name
00903. 00000 - "invalid table name"
*Cause:
*Action:
Any help would be appreciated! I didn't find 'Card' on the list of Oracle SQL's reserved words, so I'm not sure what the issue is. Thank you!

Answer 1

You need to add column CustomerId to Card table and change refrences to table_name(column_name):
SqlFiddleDEMO
CREATE TABLE Customer(CustomerID INT PRIMARY KEY);
CREATE TABLE Card(
CardNumber varchar2(20) Not Null,
CardType varchar2(5) Not Null,
CustomerId INT NOT NULL,
CONSTRAINT CustomerIDForeignKey FOREIGN KEY (CustomerID) REFERENCES Customer(CustomerId),
CONSTRAINT CardTypeConstraint CHECK (CardType IN ('Credit', 'Debit' ,'Gift'))
);
Also you can replace:
CHECK (CardType='Credit' or CardType='Debit' or CardType='Gift')
with:
CHECK (CardType IN ('Credit', 'Debit' ,'Gift'))
You can think about:
Adding Primary Key to Card table
Hashing/encrypting card number (do not store as plain text)
Creating CreditCardType dictionary table