Differences

This shows you the differences between two versions of the page.

--- data_concept:foreign_key [2023/02/19 19:32]
peter
+++ data_concept:foreign_key [2024/03/08 13:33] (current)
@@ Line 3: / Line 3: @@
 ===Definition===
 A foreign key is a [[data_concept:data element|data element]] of a [[data_concept:data file |data file]] that corresponds to a [[data_concept:primary key|primary key]] of another [[data_concept:data file|data file]].
+===Relations===
+|Foreign key|is child of |[[data_concept:data element|data element]]|
+|Foreign key|corresponds with|[[data_concept:primary key|primary key]]|of another [[data_concept:data file|data file]]|
+{{tag>All}}