Data Vault 2.0 Explained: Hubs, Links and Satellites in SQL
A hands-on Data Vault 2.0 guide: hubs, links and satellites, hash keys and hashdiffs, SQL load patterns, PIT and bridge tables, and common pitfalls.
Posted inUK Guides
UK Earned Settlement Rules, 2 November 2026: ILR Changes and Who’s Affected
Earned settlement explained: ILR moves from 5 to 10 years, with 5 years over £50,271 and 3 years over £125,141. Care workers, students and families.
Posted inUK Guides
UK Tax Codes Explained: What 1257L, BR, 0T and M1 Mean
What your UK tax code means in 2026/27: 1257L, BR, 0T, K, S and C codes, emergency W1/M1 codes, and how to check and fix a wrong tax code with HMRC.
Posted inUK Guides
Driving Test Changes 2026: New Booking Rules, Fees and Proposals
Driving test changes in 2026: learner-only booking, 2 changes per booking, 3 nearest centres, test fees, theory test facts and what is still only a proposal.
Posted inUK Guides
UK Visa Changes: October 2026 Update and What’s Coming in 2027
UK visa changes in 2026: Skilled Worker B2 English, Graduate visa cut to 18 months from 1 January 2027, B2 for ILR from March 2027, fees and earned settlement.
BigQuery Partitioning vs Clustering: Cut Query Cost and Time
A hands-on guide to BigQuery partitioning and clustering: when to use each, DDL and SQL examples, pruning rules, INFORMATION_SCHEMA checks and common pitfalls.
