IT Career Guides & Free Resources
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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Datasets vs Linked Services vs Pipelines in ADF
Datasets, linked services and pipelines are the three objects every Azure Data Factory user creates and many beginners confuse. This guide separates them with one question each, where, what and how, shows the JSON of all three for a single copy, explains the reference chain, and gives rules for how many to create.
Aggregations in Power BI for Large Datasets
Power BI aggregations for large datasets: how an in-memory aggregation table answers summary queries over a huge DirectQuery fact table, why the grouping grain decides whether it helps, shown on real data where one grain is 345 times smaller and another barely smaller, which queries hit, and automatic aggregations.
Best Free Datasets for Data Science Practice in 2026
Free datasets for data science practice, organised by the skill you want to build: built-in data for learning algorithms, public-sector data for cleaning, large trip records for performance, text and image collections, dataset search engines, and a checklist for licence and quality.
Handling Imbalanced Datasets: Techniques That Work
Imbalanced dataset techniques compared on real screening data where only 2.3% of cases are positive: what class weights, oversampling, SMOTE and undersampling really change, why moving the threshold did better, how a stronger model beat every resampling trick, and how resampling before the split fakes a great score.