Algorithms for Updating Relational Data

Question

What algorithms are known to perform the task of updating a database by inserting, updating, and deleting rows in the presence of database constraints?

More specifically

Answer 1

OpenDbDiff has source code available. You could look at that and figure out the algorithms.

http://opendbiff.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=25206