Constraint between columns in MySQL [closed]

Constraint between columns in MySQL [closed]

References

Reference NO 1

http://stackoverflow.com/questions/15198261/constraint-between-columns-in-mysql

Reference NO 2

http://stackoverflow.com/questions/635937/how-do-i-specify-unique-constraint-for-multiple-columns-in-mysql

Reference NO 3

http://dev.mysql.com/doc/refman/5.5/en/innodb-foreign-key-constraints.html

Reference NO 4

http://www.w3schools.com/sql/sql_check.asp

Reference NO 5

http://www.sitepoint.com/mysql-foreign-keys-quicker-database-development/

Reference NO 6

http://www.clusterdb.com/mysql-cluster/foreign-keys-in-mysql-cluster/

Reference NO 7

http://blog.mclaughlinsoftware.com/2010/01/30/decoding-1005-on-mysql/

Reference NO 8

http://kedar.nitty-witty.com/blog/mysql-change-datatype-column-foreign-key-constraint