Data Warehouse Testing

Automate the data testing of your Data Warehouse to accelerate testing cycles, reduce costs & risks and improve data quality

What's Involved in Data Warehouse Testing?

According to authors Doug Vucevic and Wayne Yaddow in the book "Testing the Data Warehouse Praticum" (Trafford Publishing), some of the main challenges to test for in data warehouse testing are:

  • Data Completeness
  • Data Transformation
  • Data Quality
  • Regression Testing

The only way to perform these tests in a reasonable time frame, which will compare huge volumes of data, is through automating the tests.

$8.2 million

what the average organization loses annually because of bad data

$20 million

22% estimated this annual loss resulting from bad data

$100 million

4% put that figure at this astounding amount

source: Gartner, Inc.

The 3 Biggest Issues with Data Warehouse Testing

  • The #1 Method to compare data from sources and target data warehouse – Sampling, also known as “Stare and Compare” - is an attempt to verify data dumped into Excel spreadsheets by viewing or “eyeballing” the data. Less than 10% is usually verified and reporting is manual.
  • The #2 MethodMINUS queries – subtracts data sets from each other twice and you analyze leftover rows - is inefficient and produces no audit trail or reporting.
  • Both methods require SQL programming and very few testers, analysts or operations people know SQL.

QuerySurge - The Data Warehouse Testing Solution

QuerySurge is the leading solution for automating the testing of Data Warehouses and the ETL testing process. And QuerySurge makes it really easy for both novice and experienced team members to validate their organization's data quickly through our Query Wizards while still allowing power users the ability to write custom code.

QuerySurge ensures that the data extracted from data sources remains intact in the target data warehouse by analyzing and pinpointing any differences quickly. Learn more about QuerySurge here>>

The Benefits of QuerySurge

QuerySurge is Easy to Learn

The QuerySurge Free Trial comes with a built-in tutorial that walks you through the major functionality used in testing a Data Warehouse. When you complete the tutorial, you will be ready to test your own data. It’s that easy!

Also, QuerySurge built a free Customer Training Portal. The QuerySurge Customer Portal has been designed to provide you with everything you need to learn & grow in your use of QuerySurge, including:

  • self-paced training program
  • the latest release information
  • system information
  • marketing collateral
  • help center

Find out which offering of our trial software best fits your needs to get going here>>

New to Data Warehouse Testing?

We offer comprehensive courses delivered by our expert instructors. The training is designed to guide QA professionals through the Data Warehouse/ETL testing process.

Our courses are delivered in 3 ways:

  • In the Cloud,
  • in our New York offices or
  • as a private class with our instructor going to your location.

More information on these courses can be found here>>

Need Skilled Resources?

QuerySurge employs the foremost experts in the data quality and testing field. Our team boasts Data Testers who have successfully implemented hundreds of projects.

We can provide you with either of the following services:

  • Fully outsourced data testing, including end-to-end planning, execution and analysis
  • Augment your team with our testers

Or we can provide your team with a 2-week JumpStart to help launch your effort. More>>

QuerySurge will:

  • Improve your data quality at speed
  • Dramatically increase data validation coverage
  • Detect data issues early in the delivery cycle
  • Leverage analytics to optimize your process
  • Provide a huge ROI

But don’t believe us (or our clients). Try it for yourself. Check out our free trials here>>