What are primary keys and foreign keys?

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suganthi

  • Sep 23rd, 2005
 

In RDBMS the relationship between the two tables is represented as Primary key and foreign key relationship.Wheras the primary key table is the parent table and foreignkey table is the child table.The criteria for both the tables is there should be a matching column.

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chvignesh

  • Dec 8th, 2006
 

Foreignkey is a primarykey in other table which has parent & child relationship betwee two tables. foreignkey resides in child table which reference the parent table.

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