Powerful SQL Server Data Quality Tools for Cleansing and Validation

By:   |   Updated: 2024-01-02   |   Comments (4)   |   Related: > Application Development


Our organization receives and transmits data on a daily basis for business-critical processes to numerous partners, vendors, customers, suppliers and more.  Our data needs to be validated and cleansed prior to loading the data to our Microsoft SQL Server environments.  We have made significant investments with our SQL Server DBAs and Developers to automate the processes as much as possible. Unfortunately, we are constantly shooting at a moving target i.e. file formats differ between each system, we often get unexpected file formats (data is added, removed or re-ordered), new data is being requested between the organizations and more unpredictable circumstances.  On top of this, we need to ensure all of the data is properly vetted by the Data Stewards intimately knowledgeable on the data.

The constant data management moving target tends to overwhelm the SQL Server DBAs and Developers with the need for immediate response of updating the validation and import code to then load the data to meet the business requirements between the organizations.  How can we have the best of both worlds?  Have our SQL Server DBAs and Developers build a system to support the organization, while providing our Data Stewards the flexibility to lookup, validate and cleanse the data prior to the production load without having the deep programming knowledge of our technical team.


Data Quality Suite

With SQL Server Data Platform, most DBAs and Developers turn to either SQL Server Integration Services (SSIS), Azure Data Factory (ADF), BIML, API, XML, JSON or T-SQL code for data integration and data governance needs.  With standardized files, formats and data, these technologies are able to automate tedious processes common in data management solutions.  The SQL Server technologists are able to shine and show their value in terms of time savings for the entire organization.

Unfortunately, many processes are difficult to automate due daily changes between systems perhaps due to constantly changing marketing programs, systems updates, short term programs, shifting product lines, fulfillment via numerous vendors and more.  From a technology perspective, this can be considered an SSIS Nightmare with hundreds of unwieldy packages, version control debacle and countless hours trying to automate processes that are rapidly evolving.  These situations quickly become frustrating for the SQL Server technologists and can benefit from the collaboration with Application Owners, Data Stewards and Power Users, who can decipher the data and interface with the other organizations to work through the process.

So how do we avoid the SSIS Nightmare?  Let the technologists build an automation solution that standardizes processes and gives the Data Stewards a solution for cleansing, validation, enrichment, standardization and data integration without becoming programmers?  One data quality software solution, that I would like to introduce is Unison from Melissa Data, a solution built for Data Stewards enabling them to validate, lookup, cleanse, import and export data via an intuitive project-oriented framework.  Unison data quality solutions include:

  • Intuitive three step ETL process to perform data cleansing workflows
  • Simple point and click interface to profile, cleanse, standardize, enrich, match, merge and validate data in real-time
  • Highly refined data quality algorithms to ensure your data is accurate with monthly meta data updates
  • Address verification for 240 countries, USPS certified mailings, Name Parsing and more enhancements
  • Import and export data from major databases (SQL Server, Oracle and MySQL), Excel and flat files as data sources
  • Intuitive web-based interface without programming expertise
  • Collaboration among business users to ensure critical business processes are met
  • Project oriented paradigm for re-use, modification and recurring scheduling
  • Fast data processing - 50 million address records per hour
  • Architecture designed for on-premises deployments of container technology to meet internal security and performance requirements

Let’s dive in to see Unison data quality suite in action.

Getting Started with Unison for Data Quality Management

To get started with cleansing and validating your data with Unison from Melissa Data, login to the dashboard to have access to Projects, Jobs and administrative interfaces such as logs, user administration, meta data updates and more.  Start a new project by clicking on the Projects link in the left navigation and select the New option.  This begins the process by naming the project then specifying whether the project will be public or private.

Getting Started with Unison Data Quality for Data Stewards

Once the project is named, three core steps are followed to complete the project:

  1. Define the Input Source as either a text file or database connection as your data set
  2. Configure the data validation tasks
  3. Specify Output Source to either a text file or database connection

Both the Input and Output Sources can be a flat file or database connection to SQL Server, Oracle or MySQL.  Below is the interface to create a database connection in your project.

Create a new database connection in Unison

In this project, we will drag and drop a text file from Windows Explorer into Unison and Unison will read the file header as well as preview the first three records as shown below.  Unison includes intelligent file detection, but if needed the text file properties can be configured in terms of the delimiter, field enclosure such as double quotes or if the file is a fixed width.

Unison initial data validation

Once configured, the Project looks like this:

Unison Project that is a work in progress

Unison Data Validation Tasks

The true value of Unison is apparent with the data validation tasks for contact data.  There are currently four tasks available for customer data including Name Parsing, Phone, Email and Address Cleansing which includes 240 countries.  Coming soon will be Matching, Data Profiler and Data Cleansing that are currently supported in complimentary Melissa solutions.  For Unison, simply click on any task to include it in the project.  Let’s start with Address Cleansing for our project.

Unison Data Validation Tasks

Address Validation with Unison

For Address Cleansing, the Task will match the input files to common address fields in Unison.  The process starts with identifying the Input Fields then the Output Fields which will be ultimately used in the final step of the process.  The Output Fields are the validated Melissa results to ensure the final data is accurate. Once we review and save the configuration, we will return to the main project design window.

power sql server data quality users 006

Name Parsing with Unison

Our next step is to perform Naming Parsing with Unison that follows a similar paradigm as the Address Task.  This includes input and output fields with validation as well as separation of each name segment.

Name Parsing with Unison

When we return back to the project, the current status with the Input and Tasks are completed.  Our final configuration step is to define the output.

Unison Data Validation Project In Progress

Unison Outputs

Just like with the Unison Inputs, the Outputs can be both to a File or Table in SQL Server, Oracle or MySQL.  With the Write to File option shown below, the name, extension, enclosure and delimited are included.  Further, the file can be compressed as a Zip or GZip file once built.  Another unique feature is the ability to filter the file output based on Full address matches, full phone number matches, etc.

Write to a File in Unison as an Output Task

As a final step prior to outputting the data, Unison provides the ability to review the Output Fields, turn columns on / off with the slider and rearrange the column order.  The legend on the right specifies the color coding associated with the Output Fields.

Review Output Fields in Unison

Final Project Review

Now that the project is configured, there are three options on the top right of the interface including:

  1. Run Now
  2. Preview Output
  3. Schedule

Final Data Cleansing Project in Unison

Preview Output

From the Preview Output option, you can review all columns and the first set of rows to ensure the data is going to be delivered in the needed format.  If not, you can update the project to your requirements.

Output Preview in Unison

Run Now in Unison

If the data is correct based on the Preview Output, then Run the job, review the status and download the final output file the next steps in your business processes.  Whether that means copying the file to a directory for the data to be loaded by an automated process built by SQL Server Professionals, encrypting the file then sharing with team members or partners, etc.

Job Status in Unison

If you click on the View Reports button, you are able to see the results from both the Name and Address Parsing in either a graphical or tabular format for the types of changes made as well as errors recorded.

Unison Reporting

Unison Scheduling

The final option for the project is to schedule the job to run either daily, weekly, monthly or a customized time frame. Below is the intuitive interface to schedule a job daily.

Schedule a Job to run daily in Unison

Unison also allows the opportunity to update and review the Jobs to meet daily management and monitoring needs.

Unison Scheduling Interface

How do I get started with Unison?

  1. Think about the numerous hours and relive the frustration of meeting critical deadlines that your business and technology groups face when trying to cleanse, validate, dedupe and load data among various systems in order to achieve high-quality data.
  2. If you are experiencing SSIS Nightmares with constantly changing requirements, code and too many SSIS Packages to count, then consider Unison as a technology for data enrichment that you can integrate into your processes. This enables your Power Users to validate the data and your SQL Server Professionals to manage the data in production environments.
  3. Get a personal demo of Unison from a member of the Melissa team and then put Unison through its paces in your environment with your data to see the ease of use firsthand.  See how easy it is to validate your data and streamline tedious business processes that have not included data validation.
  4. Communicate how Unison can help your organization:
    1. Time savings for data quality issues, data validation, data enrichment, data matching, data migration, deduplication and data cleansing
    2. Put the power of data quality and data analysis in the hands of your data stewards
    3. No programming experience necessary, only knowledge of the company data and business rules
    4. Reduce the burden of your SQL Server Professionals to focus on production data
    5. Introduce data quality to new processes to improve the value of your data, customer experience, decision making, data warehouse projects and business intelligence
  5. After working with Unison, measure the tangible and intangible benefits and determine your next steps to radically streamline business processes and put the power of data quality in the hands of your power users.
Next Steps

MSSQLTips.com Product Spotlight sponsored by Melissa, makers of Unison.

About the author
MSSQLTips author Jeremy Kadlec Jeremy Kadlec is a Co-Founder, Editor and Author at MSSQLTips.com with more than 300 contributions. He is also the CTO @ Edgewood Solutions and a six-time SQL Server MVP. Jeremy brings 20+ years of SQL Server DBA and Developer experience to the community after earning a bachelor's degree from SSU and master's from UMBC.

This author pledges the content of this article is based on professional experience and not AI generated.

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Article Last Updated: 2024-01-02

Comments For This Article

Thursday, February 17, 2022 - 3:11:47 PM - Jeremy Kadlec Back To Top (89807)

The advantages with Unison are:

• Melissa has expansive Reference Data Sets for actual data validation (Contact, Address, Business, GIS, Healthcare, etc.), not string parsing that can be coded in SSIS, a scripting language, .NET, etc.
• Unison is intended for Data Stewards / Power Users to enable them to validate data in a file or database, so no coding is necessary. Perhaps this is for a 1 time need or perhaps data is not consistently formatted for data imports / exports, Data Stewards / Power Users with domain knowledge need to review the data prior to loading to a staging area where an automated SSIS process can import the data into a warehouse or mart, etc.
• Melissa tools including Unison provide result codes on both a row and column level to let the Developer / DBA / Data Steward / Power User know what validations were performed and what changes / additions were made to the data for the final record.
• Data becomes stale and inaccurate overtime (people move, change jobs, retire, change phone numbers, get married, get divorced, companies move, go out business, new homes are built, etc.). Melissa’s Reference Data Sets, which are used for data validation in Unison, are updated regularly by Melissa to have the current data for validation purposes within the Melissa tools. This type of data validation cannot be accomplished with string parsing.

I would encourage you to review this URL (https://www.melissa.com/customer-data-validation-platform) for additional information about Unison. If you have additional questions, I can setup a time for you to speak with someone on the technical team at Melissa to ensure all of your questions are properly addressed.

Thank you,
Jeremy Kadlec
Community Co-Leader

Wednesday, February 16, 2022 - 8:55:46 PM - Jeff Moden Back To Top (89804)
I just ran across this old post and don't know why I wasn't notified of your answer 3 years or so back.

Thank you for the answer but you've not actually answered the question I had asked.

Thursday, June 6, 2019 - 2:10:58 PM - Jeremy Kadlec Back To Top (81350)


Thank you for the questions.

Unison is intended for end users to be able to either access a database or file (that they have permissions to) in order to import or export data based on specific project goals, perhaps for a mailing, marketing promotion, etc.  The goal for the product is to try to help end users become more productive and let DBAs\Devs\BI Professionals work on more automated solutions that are standardized.  Perhaps Unison can be used in some circumstances to validate a data set prior to an automated process built by the DBA\Dev\BI groups running to import the data to a production environment.  Sometimes it is easier for a user to validate the data, because they are intimately familiar with it, rather than trying to build an automated process for a short term cycle or a process that is still a moving target that the business still needs completed.  Sometimes these situations yield numerous SSIS Packages that can quickly become unwieldy and frustrating for DBA\Dev\BI Professionals when we cannot get a solid set of requirements, but the business still needs the data processed.

The current Unison Data Validation Tasks include - Name Parsing, Phone Cleansing, Email Cleansing, Address Cleansing, Matching (Golden Record), Data Profiling and Data Cleansing.  These are intended to help validate specific sets of data, but Melissa does have numerous mature algorithms to not just validate that an email address meets RFC standards, but is actually valid relative to the overall record.  Further, Melissa also has name algorithms for matching to determine if J Smith, John Smith, John R Smith and Jon Smith are really the same person or not.  Unison does have logic to decipher first, middle and last names as well.  With each record and validation type, there are also detailed Result Codes that outline which conditions were met with each record.  There could be hundreds of detailed validation and error codes for a single data set not just related to parsing the data, but also lookups, matching, etc.

The although Unison does have import and export capability similar to SSIS, in my opinion, the value of Unison is enabling the end users to work with the data and validating the overall data set is correct or updating the data that requires modifications to have a correct data set perhaps via lookup, verification, matching or data profiling which is not natively available in SSIS.

Also keep in mind, Melissa has a full suite of tools for DBA\Dev\BI Professionals that directly integrate with SSIS to perform these same validations.

Thank you,
Jeremy Kadlec

Monday, June 3, 2019 - 9:37:46 AM - Jeff Moden Back To Top (81304)

I'm curious... how does Unison handle last names like "Van de Graaff" or entries such as "Jack & Jill SomeLastName" or "Jack SomeLastname1 and Jill SomeLastname2"?

And with no slight intended, this looks like the same effort you'd need for doing similar in SSIS.  What is the large advantage here?