Learn how to approach data cleansing using MS SSIS.
Using the 2012 SSIS version, watch this tutorial to discover how to cleanse your "dirty data":
Re-format manual entries to be used in a report
Look at client address and city
Correct misspelled city names and non-capitalized cities
Run a nightly job
Filtering for dirty data
Use SQL command
Use a fuzzy lookup
Join reference tables
Preview table data