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Expert roadmaps, tutorials, salary guides and interview prep across Data Science, Generative AI, Python, Cloud & Analytics — written by GloryTecks trainers in Hyderabad.
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Composite Models and DirectQuery in Power BI
DirectQuery and composite models in Power BI, from Microsoft's guidance: why import is the default, the situations that justify DirectQuery, its limits from the one-million-row cap to query folding, how composite models combine import, DirectQuery and dual tables, and the security and performance traps of mixing.
Connecting Power BI to SQL Server: A Step-by-Step Guide
Connecting Power BI to SQL Server, step by step: preparing a reporting view, the connector's settings and advanced options, authentication and certificate errors, keeping Power Query steps folding back to SQL Server, native SQL statements, checking row counts, gateway refresh and troubleshooting.
DAX Interview Questions for Power BI Developers
DAX interviews test whether you understand evaluation context, not whether you remember function names. Six classic questions are answered with real DAX measures, evaluated by the same kind of engine that powers Power BI, on a month of real online orders, where the wrong formula overstates revenue 45,000 times.
Power BI Developer Salary in Hyderabad 2026: Degrees, Databases and Pay
Should a Power BI developer do a master's degree, or learn a different database, to earn more? Real 2025 survey data for India gives a clear answer once people are compared with others of the same experience: the master's premium disappears, while some technical choices still matter. Here is the evidence.
Power BI Performance Tuning: Make Reports Faster
A method for making Power BI reports faster: measure first with Performance Analyzer and read its DAX query, visual display and other timings, then shrink the import model, reduce column cardinality on a real retail dataset, write lighter DAX, filter and simplify pages, and check capacity and gateways.
Power BI Dataflows Explained for Beginners
Power BI dataflows for beginners: what a dataflow is, why Microsoft calls Gen1 legacy and recommends Dataflow Gen2 where Fabric is available, the problems dataflows solve, from reusable preparation to protecting sources, when not to use one, how to create and refresh one, and design habits that keep them useful.