!Skip navigation

Identify and merge duplicate contact records

Identify and merge duplicate contacts in volume

Launch snapshot demo

Highlight duplicate records in your contact lists and databases

  • Identify and merge duplicate contact records at any time
  • Avoid the costs associated with duplicated contact information
  • Find duplicates according to your own business rules
  • Keep the control of your contact data in-house
  • First step towards a single view of your customers

The challenge of duplicate contacts

"Over half of all organisations said that more than 5% of the data they regularly mail could be duplicates."

'Making sense of a crowded nation'. An Experian QAS whitepaper, November 2008

"Research indicates that 89% estimate that they have 5-20% duplicates in their database."

Data Matching Survey produced by Hotwire - September 2008

QAS Unify is a de-duplication software tool that allows you to identify and merge duplicate contact records from different sources in volume, on a regular basis. This allows you to:

  • Save money on maintaining your contact data - Removing duplicates means fewer records to enhance, analyse and suppress later on.
  • Avoid contacting the same person twice in a campaign - Again saving you money and helping your organisation to maintain brand perception.
  • Compare two contact lists for overlapping records - Making it easy to tell when individuals are new or already known to your organisation.
  • Create a complete, merged set of details for each contact - This is the first step towards creating a single view of your customers, donors or citizens across multiple systems.
  • Reduce information security risks - As an in-house solution, QAS Unify allows you to retain control of your data and removes the need for you to send it off-site for duplicate checking.

Identifying and merging records in volume

Features of QAS Unify include:

  • Support for large data volumes - identify and merge duplicates at a rate of 2 million records per hour for data sources of up to 40 million records in size.
  • Preset and custom matching scenarios - make it easy to group records associated with individuals, families, households and businesses.
  • Intuitive rule builders - give you complete control over how duplicates are identified, how the surviving records are selected and how duplicates are merged together.
  • Multiple matching techniques - to ensure matching is successful and accurate. Phonetic, fuzzy and alias matching are among the techniques employed automatically.
  • Exclusion lists of common words - define lists of frequently-occurring words such as "society" or "Ltd." to disregard when matching organisation names.
  • Matches any type of information - find matches across names, businesses and addresses, as well as other types of information such as dates of birth and national insurance numbers. The full range of elements that can be matched means more accurate de-duplication.
  • Import and export - from and to a variety of common file types and databases via ODBC or direct connection to MS SQL Server 2005 and 2008.

Prevent duplicates in real-time

QAS Match is front-office counterpoint to QAS Unify. It can be used in combination with QAS Unify to prevent duplicates entering your system in real-time at the point of capture, typically through seamless integration into a call centre or Customer Relationship Management (CRM) system. Read more on our QAS Match product page

QAS Professional Services

With the assistance of QAS Professional Services, the de-duplication capabilities offered by QAS Unify can be integrated, automated and scheduled periodically to fit or be performed as a one-off bulk de-duplication run to fit in with your business workflow.Our training consultants are also on hand to share their expertise on QAS Unify with you.


Calculate ROI

"Beyond the obvious costs associated with the lack of a 'single view' of data, businesses waste opportunities to increase revenue and profits, reduce time to market, become more efficient, improve customer service, and reduce business and IT complexity."

Predicts 2008: Master Data Management, Gartner February 2008

Identifying and removing duplicates in databases is essential to making the most effective use of a contact data and maintaining data quality.

Use our online tool to calculate how much your duplicates could be costing you. Calculate ROI by highlighting how much you could save with QAS Unify.


Product Brochure




Software, data and services from Experian QAS