Data Quality Course

The data quality course is for anyone who has heard the phrase "our master records are correct" in a meeting and knows, deep down, that they aren't. Data quality is not an opinion. It is measurement: completeness, consistency, accuracy, timeliness, uniqueness and validity. Each of these dimensions has a way to be measured and a way to be improved.

The course is for master data analysts, data stewards, quality teams and IT who need to move from the "let's clean up the base" talk to a data cleansing plan that actually finishes.

What you learn in the course

You learn to do data profiling before trusting any base, to calculate quality indicators by dimension, to build a data cleansing plan with real priorities, and the difference between automatic deduplication and human review when the case is ambiguous. We work through the duplicate material example, the most common pain in the master data of industrial and retail companies, where the same item shows up registered in different ways because there is no unique key like the one that exists for suppliers.

We also show how data quality underpins any AI project: a model trained on bad master data learns the error along with the right pattern, and nobody notices until the decision comes out wrong.

How MDM Academy teaches

I teach from real data cleansing projects, not academic theory. I've seen companies spend a fortune on data quality tools without first understanding which dimension really mattered for their business. The course avoids that mistake, teaching you to prioritize before buying a solution.

Frequently asked questions

Is data quality the same thing as cleaning up the base? Cleanup is one part. Data quality also involves measuring, preventing errors at entry and maintaining the standard after the cleanup, otherwise the problem comes back within a few months.

Does the course teach any specific tool? The course explains the concept and practice behind tools such as Informatica DQ and Ataccama, without depending on a specific license to follow the content.

Do I need to know SQL to take this course? It helps, but it isn't mandatory. The course teaches enough SQL for you to check your own base, even without deep technical training.

Is this course for those who handle materials, or only customers and suppliers? It is especially suited to those who handle materials, because that is where duplication is most common and most expensive, but the concepts apply to any master data domain.

Get to know MDM Academy

This course is part of MDM Academy, the data governance and master data school of 4MDG. If your base deserves more trust than it has today, it's worth getting to know MDM Academy at [mdmacademy.com.br](https://www.mdmacademy.com.br).