Measuring the right Data Quality metrics ensures that you have the most trustable data. The more accurate is your data on Azure, Snowflake and other clouds, the more efficiently you can run your business. High-quality data reduces wasted time and effort, it also helps you make more informed decisions about your business operations. Next is being able to measure it automatically and without human intervention. DataBuck automates the process and gives you the most trusted data at the lowest cost.
To measure Data Quality and Data Trustability in your organization, there are six key metrics you should autonomously monitor regularly.
- High-quality data is essential for the efficient and reliable operation of every business.
- The six key data quality metrics to autonomously monitor includes accuracy, completeness, consistency, timeliness, uniqueness, and validity.
- Poor-quality data can result in wasted resources, increased costs, unreliable analytics and bad business decisions.
How Poor Data Quality on Azure and Snowflake Affects Businesses
Low-quality data permeates many companies today. Gartner estimates that 20% of all data is bad, and that bad data can have a significant negative impact on company operations.
SOURCE: Created by author with data from the 2021 Experian Research
Having poor-quality data can make it difficult to operate your business daily. For example, sending an email promotion to a database full of outdated or inaccurate customer records will result in an unacceptable number of bounced messages. It also makes it difficult to conduct long-term planning, as your decisions can be based on bad data.
An Experian study revealed that 55% of business leaders lack trust in their business assets. These executives say that poor-quality data:
- Wastes resources
- Costs them money
- Damages the quality of their analytics
- Negatively impacts the customer experience
- Results in fulfillment delays
- Slows down their digital transformation
- Hinders compliance with government and industry regulations
If you want to avoid these issues, you need to improve the quality of your data – which you do by tracking data quality metrics as part of a complete data quality management program.
What Data Quality Metrics Should You Measure on Azure and Snowflake?
It’s important to monitor the quality of your data and take appropriate action if it doesn’t measure up. To do this, you need to track six key metrics.
High ratings on each of these key metrics indicate high-quality data. Low ratings indicate lower-quality data that may need to be cleaned or have individual records deleted.
Accuracy measures the number and types of errors in a data set. Tracking this metric answers the basic question: Is the behavior of the data within expected bounds?
Different types of inaccuracies may be present in a data set, including:
- Anomalous Value: Whether the value in a field is within acceptable limits
- Anomalous Micro-Volume: Whether the volume of records within a microsegment of data is within acceptable levels
- Anomalous String: Whether the value in a field matches options in a pre-determined list
- Anomalous Intercolumn Relationships: Whether multi-column relationships in a record are accurate
- Anomalous Distribution: Whether the distribution of data within every microsegment is accurate
To measure accuracy, data can be compared to a reference data set. For example, customer-entered addresses and ZIP codes can be compared to the USPS address registry. It can also be checked logically to see if it falls within accepted bounds and makes sense.
Accuracy is typically measured as the percentage of errors to the total number of records. A lower percentage indicates higher data quality.
It’s important that all critical fields in a record be fully populated. For example, a customer record missing the ZIP code is incomplete.
The completeness metric measures the number of records with incomplete data. It is tracked by identifying records with empty fields and typically expressed as a percentage of the total number of records.
Note that it may be acceptable for some fields to be empty – for example, a field that asks for optional customer feedback. A null in this type of field should not be included in the completeness metric.
Consistency measures how individual data points pulled from two or more sets of data synchronize with one another. If two data points are in conflict, it indicates that one of both of the records are inaccurate.
For example, you may combine customer data from two different sources. When merging the data for a given customer, you want all the fields to agree – the customer should have the same street address, ZIP code, and phone number. If the two sources have different phone numbers for the same customer, the data is inconsistent.
Inconsistency can have a number of causes, including:
- Data entered incorrectly in one or more sources
- Data entered differently in one or more sources (i.e., “Cir” vs. “Circle” in a street address)
- Data sourced at different times (indicating newer data may reflect changes from older data)
- Different structure/schema between the data sources not fully matching
(The following video shows how DataBuck from FirstEigen ensures consistency between different data sources.)
Timeliness, sometimes called currency, is a metric that measures the age of data in a database. More current data are likely to be more accurate and relevant, as information – especially customer information – can change over time. In addition, there is a significant risk of multiplying errors when older data is moved through the pipeline, as all intermediate data repositories get populated with results from the outdated data.
Timeliness is tracked via timestamps on the data sources. Establish a base difference between the current date and then either reverify, update, or archive older data.
The uniqueness metric tracks duplicate data. You don’t want to count any data twice, as that can unduly weight any results. It’s important to identify duplicates and either merge them or delete the duplicates.
Validity measures how well data conforms to standards. That is, data entered into a given field should be of the proper type; if the wrong data format is entered, that data may be unusable.
It’s important to check that each piece of data conforms to the correct type and format of data required. For example, a two-digit alphabetic state code cannot have three letters or any numbers in it. Date fields must conform to an established format, such as date/month/year, not any other order. Invalid data should be identified and corrected.
DataBuck Automatically Tracks Data Quality and Trustability Metrics in the Data Lake, Data Warehouse and Data Pipeline Without Human Input
When you want to track key Data Quality and Data Trustability metrics, turn to DataBuck from FirstEigen. DataBuck is an autonomous Data Quality and Data Trustability management platform that automates more than 80% of the data monitoring process. It can automatically validate thousands of data sets in just a few clicks and ensure that your organization is always working with the highest-quality and most trustable data. Contact FirstEigen today to learn how DataBuck can improve your firm’s data quality.
Check out these articles on Data Trustability, Observability, and Data Quality.
- 6 Key Data Quality Metrics You Should Be Tracking (https://firsteigen.com/blog/6-key-data-quality-metrics-you-should-be-tracking/)
- How to Scale Your Data Quality Operations with AI and ML (https://firsteigen.com/blog/how-to-scale-your-data-quality-operations-with-ai-and-ml/)
- 12 Things You Can Do to Improve Data Quality (https://firsteigen.com/blog/12-things-you-can-do-to-improve-data-quality/)
- How to Ensure Data Integrity During Cloud Migrations (https://firsteigen.com/blog/how-to-ensure-data-integrity-during-cloud-migrations/)