Open with Google Docs 5. What is a key ine Key is an attribute or column in a table. 6. Why do you need Keys? Key is used to uniquely identify a row in a table Student Table FName LName Al Farsi Email...

Extracted text: Open with Google Docs 5. What is a key ine Key is an attribute or column in a table. 6. Why do you need Keys? Key is used to uniquely identify a row in a table Student Table FName LName Al Farsi Email [email protected] Mobile 9384943 SID 201512345 Aisha 6. m 201612344 Shams Al [email protected] 9684942 4 a Balushi m 1 201734343 Marwa Al Alawi [email protected] 8983838 2 Primary Key:- SID Super Key:- It is a set of one or more attributes to uniquely identify a row in a table (SID, EMAIL) Candidate Key: - It is a super key but no redundant attribute. Alternate Key or Secondary Key:- It is a key which is not a primary key Il