A second unique key (in addition to ContactId) that can optionally be assigned to contacts to help in retrieving them via the iMIS search functionality. Usually something like Social Security Number, License Number, Certification Number, Old Member ID, etc.

public string MajorKey { get; set; }

Public Property MajorKey As String

public:
property String^ MajorKey {
	String^ get ();
	void set (String^ value);
}