I use SQL Server 2008 I use a CHECK CONSTRAINT on multiple columns in the same table to try to validate data input. I receive an error: Column CHECK constraint for column 'AAAA' references a...

CREATE TABLE LOCATION ( LOCID VARCHAR2(5) , MINQTY NUMBER , MAXQTY NUMBER , PRIMARY KEY (LOCID) , CONSTRAINT CHECK_LOCID_LENGTH CHECK (LENGTH(LOCID) = 5) , CONSTRAINT CHECK_MINQTY_RANGE CHECK (MIN...

I have a customers table that links to an addresses table through a middle CustomerAddress table. This means that a customer can have many addresses and an address can have many customers. (This is...

I have the following (fictitious) tables: ╔════════════════════╗ ╔════════════════════╗ ║ Course ║ ║ Person ║ ╠══════╦═════════════╣ ╠══════╦═════════════╣ ║ ID ║ int ║ ║ ID ║ int ║ ║ Name ║ varch...