The Tree Relationship Calculator is an object that accepts an XML representation of a tree and will calculate the relationship of any two members within it. This article describes how relationships are calculated, and what terms like second cousin, or first cousin once removed, mean.

This article describes how to build a logic engine entirely in SQL. In the context of our example, a logic engine is a program that takes in a set of variables and corresponding values, evaluates a set of predefined conditions and builds a result set based on which conditions were found to be true.

The classes in this project allow you to parse text expressions entered by a user and compile them to a .NET assembly. This assembly can be executed on the fly, or saved to a DLL.