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The clariBI blog

Articles on business metrics, reporting, forecasting and getting answers from the data in the tools you already use.

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Data Analytics

Spot data quality issues before they cost you

Most bad numbers come from five predictable problems: missing values, duplicates, stale data, wrong values and changed columns. Here is how to catch each one with simple checks before it reaches a dashboard or a decision.

Jan 4, 2026 7 min read by Darek Černý
Data Analytics

Revenue forecasting for subscription businesses

Subscription revenue should be easy to forecast because most of next month's revenue is already on the books. Most forecasts still miss because of optimistic assumptions. Here is a component model with a worked example, three scenarios and a monthly routine that keeps it honest.

Jan 2, 2026 6 min read by Darek Černý
Data Analytics

Data warehouses: what they are and when you need one

A data warehouse is a database built for analysis rather than for running an app. Here is what that means in practice, how ETL and ELT work, the signs a growing business needs one, and the cheaper options that are often enough first.

Dec 31, 2025 6 min read by Darek Černý
Data Analytics

Customer segmentation: RFM, behavioral and practical methods

A practical guide to customer segmentation for small and mid-size businesses: RFM scoring step by step, behavioral and value-based segments, the formulas behind them, and how to put the segments to work.

Dec 29, 2025 7 min read by Darek Černý
Business Intelligence

Self-service business intelligence: a practical guide for 2026

Self-service BI lets the people who ask the questions get the answers themselves, without a queue of report requests. This guide covers what it is, how to roll it out in four phases, which features matter in 2026 and how to keep the numbers trustworthy.

Dec 28, 2025 8 min read by Darek Černý
Data Analytics

Time series patterns in business data: trends, seasons and anomalies

Revenue, orders and signups all mix a long-term trend, repeating seasonal cycles and the occasional anomaly. Here is how to tell them apart with simple methods, worked examples in round numbers, and what each pattern means for your decisions.

Dec 27, 2025 6 min read by Darek Černý
AI & Machine Learning

How natural language analytics works, and where it fails

Asking your data a question in plain English works well for some questions and badly for others. Here is what happens between the question and the chart, the failure modes to watch for, and how to phrase questions that get reliable answers.

Dec 25, 2025 6 min read by Darek Černý
How-To Guides

How to build executive dashboards that actually get used

Most executive dashboards are opened twice and forgotten. Here is how to build one around the decisions your leadership makes, with the right number of metrics, honest comparisons and a clear owner.

Dec 25, 2025 6 min read by Darek Černý
AI & Machine Learning

AI reports: what to trust and what a person should review

AI can draft a business report from your data in the time it takes to get a coffee. Some parts of that draft are reliable, some need a quick check, and some should be rewritten by someone who knows the business. Here is how to tell them apart.

Dec 23, 2025 6 min read by Darek Černý
Data Analytics

Why real-time analytics is often overkill, and what you need instead

Streaming data pipelines are expensive to build and run, and most business decisions do not need them. A plain framework for deciding how fresh each metric has to be, what real-time really involves, and what to do instead for the few things that cannot wait.

Dec 22, 2025 6 min read by Darek Černý