A few months back Jamie Manuel blogged about data access governance (Three Steps to Better Data Governance), I'd like to expand a little bit on what he wrote.
One of the most pressing needs we at Quest see at our identity and acess management customers is the need to govern access to unstructured data, for example speadsheets and word documents available to employees via SharePoint sites, NAS devices, and file servers. In many cases the level of control, accountability, and visibility available to organizations on unstructured data is nowhere near as effective as it is for network access or other areas of IAM. But unrestricted access to data possibly poses an even greater risk than system access.
Many vendors offer "data access governance" solutions, but in most cases those solutions only address part of the problem ... similar to constantly adding air to a slowly leaking tire rather than repairing the leak. A holistic approach to data access governance would include the full range of capabilities and touch the largest number of systems possible. Quest One Identity Solutions cover that entire range.
In summary, many vednors claim to offer data access governance solutions. But ask youself, "does this offering really address my full data acess governance needs?" If the answer is "no" or "I'm not sure", I invite you to look at Quest One Identity Solutions for the most holistic and complete approach to data access governance available.