What is forieng key
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
A foreign key is a key used to link two tables together. This is sometimes also called as a referencing key.A Foreign Key is a column or a combination of columns whose values match a Primary Key in a different table.The relationship between 2 tables matches the Primary Key in one of the tables with a Foreign Key in the second table.If a table has a primary key defined on any field(s), then you cannot have two records having the same value of that field(s).