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CAT CLI, published by Data Tools s.r.o., is a command-line data testing utility designed to validate data quality across virtually any mainstream storage engine. Released in version 2.3.0 as the nineteenth consecutive update, the program belongs to the “Database Tools” category and targets data engineers, QA analysts, and BI teams who need repeatable, version-controlled test suites. Users author tests in concise YAML or JSON syntax, store them in Git, and execute them against SQL Server, PostgreSQL, Oracle, Snowflake, BigQuery, Redshift, Databricks, MySQL, Excel files, or CSV folders without changing code. CAT combines row-count checks, schema comparisons, referential-integrity rules, anomaly detection, and custom SQL assertions into arbitrarily complex workflows, while built-in templating lets one test definition run unchanged across dev, stage, and prod environments. After each run the engine produces HTML, Markdown, or JSON reports that can be pushed to Teams, Slack, Azure DevOps, GitHub Actions, Jenkins, or Power BI, giving stakeholders an immediate, colour-coded view of data health. Because tests are lightweight and can be triggered from any CI/CD pipeline, teams gain confidence to release dashboards, ML models, or ETL packages to production without manual spot checks. Version 2.3.0 adds parallel execution, credential chaining, and JUnit XML export, enhancements that continue a monthly release cadence established since the first public build. CAT CLI is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.
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