Alation Data Catalog Data Quality Score



Assign a Trust Score of Data to every Data Asset in the Alation Data Repository autonomously.

With the increasing usage of Alation Data Collections as the fundamental component for business data governance, it is vital to offer data on the status and usability of data assets. Users may readily verify the usability and relevance of the dataset in their specific use case thanks to the availability of standardized data trust scores inside the data catalog.

Why must the Data Governance team be concerned with the Data Trust Score?

When working with data, one important question is, “Is the data of sufficient quality for my purpose?” Data scientists who work on complex use cases require trust in the information they employ. Three data types that help acquire confidence in a dataset include information regarding data quality, lineage, and the responsible person, e.g., data custodian or data owner. With this information, it is more probable that relevant data sources will be used, while incorrect data sources likely to generate erroneous results will be avoided.

Data quality and trustworthiness are critical to making the best use of data. The better the outcomes, the more reliable the data is. It is essential to assess data accuracy to ensure that stakeholders and autonomous systems decide based on valid information.

Data Trust Score seems to be a singular number that describes a currency of confidence during the use or exchange of data. Data Trust Score may help solve the information imbalance problem in current catalogs. The consumer and creator of data may not have the same information about the data’s usefulness.

Generally, the Trust score is based on specific data quality factors applied to a particular column in the data set. The values are then added to determine the final quality score for the complete data set. The total score is the average of all column scores.

Data quality is essential for opportunities for new and improved data use in any company. Users can discover insights about the information by including data quality information in the alation catalog without ever switching contexts. Data Catalog users frequently need data quality and other metadata about data assets.

Although Alation data catalog is not a data quality solution, it can assist organizations in making data quality data. Alation offers vendor-independent connections with specific data quality platforms, allowing data catalog search functions to prioritize higher-quality data. Data assets with top marks are promoted, indicating high data quality. Other variables, such as utilization and firm certifications, might help catalog users choose the best data items. You can click here for more information at

How do you compute the Data Trust Score?

The weighted mean data quality score for data quality rules can be used to get the trust score. Progressive organizations classify data quality rules based on data quality dimensions.

A trust score is then produced for each dimension and rolled up for the dataset using weighted average methods.


It ensures the completeness of significant contextual fields.


The dataset should contain valuable data and adhere to specific rules or patterns. This data quality dimension assesses significant contextual fields’ length, pattern, and format.


This factor determines the individual records’ uniqueness. Primary keys must discriminate between distinct data values and records to avoid duplication.


It ensures the integrity of intercolumn relations.


It calculates the deviations of the necessary continuous and categorical fields using historical data.


It can detect the value and volume abnormality of crucial columns.

Difficulties in integrating a Data Trust Score further into Data Catalog

CDOs (Chief Data Officers ) oversee the organization’s data strategy. They are responsible for ensuring data quality. The volume of data assets is constantly expanding, and data teams are having trouble keeping up because conventional data validation methodologies are resource-intensive, time-consuming, expensive, and unscalable for thousands of data assets. Business stakeholders frequently discover mistakes in their reports and dashboards, leading to data mistrust.

While incorporating the quality of the data into the data catalog, the data team faces the following operational challenges:

  • It takes time to analyze data and consult experts to determine which data quality criteria must be enforced. Data quality experts are inexperienced with third-party data assets gathered in either a publicly or privately setting. They must work together with subject experts to develop data quality requirements.
  • The rules are implemented differently for each data set/table. As a result, the amount of work is proportional to the number of tables in the Data Catalog.
  • Existing open-source technologies and methodologies have limited audit trail capabilities. Creating an audit log of rule execution outcomes for compliance needs frequently necessitates time and effort on the part of the data engineering group.
  • Managing the imposed rules is time-consuming.

Why Use Machine Learning?

ML algorithms can learn from enormous amounts of data and identify previously unknown patterns. Furthermore, they train on new data as it evolves. Using machine learning to calculate data trust scores offers various advantages:

  • Machine Learning assists in objectively determining patterns in data or data fingerprints and translating those patterns into data quality guidelines.
  • Machine Learning can then use the data fingerprints to identify transactions that do not follow the regulations.
  • Implementing an ML method can help to examine the data’s health swiftly.
  • ML is typically more accurate and complete than a human-driven data review process.

More crucially, when a consumer of data assigns a trust score, the score becomes the same pressure to conceal or even fabricate information for the creators of the fundamental data assets. The Data Trust score based on machine learning removes human biases and delivers an objective number that producers and consumers may agree on.

Angela is a senior editor at Dreniq News. She has written for many famous news agencies.