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  • Identifying Relationship Between Columns In SQL9/20/2018 4:37:17 AM. Identifying relationship between columns in SQL. The query is given below to find the relation between any two columns in the given database. How to search the column in the database by its name.
  • Setting Null Value in an Optional Non-identifying Relationship Using ComboxBox5/15/2012 4:36:39 PM. The most common relationship in any data model is the one-to-many non-identifying relationship. Non-identifying relationship implies weak dependency relationship between parent and child entities. There are two kinds of non-identifying relationships, including optional and mandatory. The necessity of the parent entity is "exactly one" and "zero or one" in the mandatory and optional non-identifying relationship respectively. One problem I’ve tackled in many of my enterprise application is the presentation of complex data relationship such as optional non-identifying relationship using data binding techniques in Windows Forms applications. In this article, I will illustrate how to face this problem.