Primary key is unique index and non null coulum in a table. While foreign

What is the difference between the Primary and Foreign key?

Question Posted / suma

Answer Posted / suma

Primary key is unique index and non null coulum in a table.
While foreign key can have repeated values.

Is This Answer Correct ?

9 Yes

1 No

Please Help Members By Posting Answers For Below Questions

What is difference between db2 and sql?

1046

What is sql select statement?

1086

What does trigger mean in psychology?

1008

define sql update statement ? : Sql dba

1159

what does it mean to have quoted_identifier on? What are the implications of having it off? : Sql dba

1067

What are the advantages of stored procedure?

1040

what are different types of collation sensitivity? : Sql dba

1119

What is error ora-12154: tns:could not resolve the connect identifier specified?

1125

What is orm in sql?

1099

Can we create foreign key without primary key?

1039

What is the most restrictive isolation level? : Transact sql

1126

Is sql a oracle?

1022

Is sqlite good enough for production?

1047

What is sql*loader and what is it used for? : aql loader

1250

How long does it take to learn pl sql?

1106