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My learningData Engineering With AILesson 24
Your Data Passed Every Test and Is Still Wrong — Semantic Data Validation Explained

Lesson 24

Your Data Passed Every Test and Is Still Wrong — Semantic Data Validation Explained

Traditional data tests check formats, nulls, and schema rules — but semantic validation checks whether the data actually makes business sense. By using AI and contextual validation techniques, modern data teams can detect logical inconsistencies, hidden anomalies, and misleading outputs that standard pipeline tests often miss.

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Curriculum

25 lessons · 2h 0m

0/25 lessons done2h 0m left
  1. 04:58

    AI Is Transforming Data Engineer Roles: What’s Changing

    04:58

  2. 04:19

    The Data Engineer Role Just Split Into 4 Jobs — Which One Are You?

    04:19

  3. 04:34

    Writing SQL Is No Longer the Hardest Part of Being a Senior Data Engineer — Here’s What Is

    04:34

  4. 04:40

    Chunking Is the New Partitioning — The Data Engineering Decision That Makes or Breaks RAG

    04:40

  5. 04:26

    Fixed vs Recursive vs Semantic Chunking — Choosing the Right Strategy for Your AI Pipeline

    04:26

  6. 06:03

    Embedding Pipelines Explained — How Data Engineers Choose & Version Embedding Models

    06:03

  7. 07:01

    Your embedding model just got upgraded — how to re-embed billions of rows without downtime

    07:01

  8. 04:27

    CDC for Unstructured Data — The Ingestion Pattern Most Data Pipelines Miss

    04:27

  9. 08:17

    Vector Indexes for Data Engineers — HNSW vs IVF vs Flat Without the Math Degree

    08:17

  10. 09:51

    Pure Vector Search Is Dead — Why Hybrid Retrieval Is Now the Production Standard

    09:51

  11. 05:22

    Rerankers — The Low-Cost Pipeline Upgrade That Beats Bigger Embedding Models

    05:22

  12. 03:56

    Query Transformation as a Pipeline Stage — Rewriting Vague Questions Before Retrieval

    03:56

  13. 02:48

    Your RAG Gave a Wrong Answer — The Data Engineer’s Failure Tree for Debugging It

    02:48

  14. 05:18

    PDFs Are the New CSVs — Building Parsing Pipelines That Scale to Millions

    05:18

  15. 03:47

    The Duplicate Documents Secretly Killing Your Data Quality — MinHash, SimHash & Embedding Dedup Explained

    03:47

  16. 04:33

    The 5 AI Agents Every Self-Healing Data Pipeline Needs

    04:33

  17. 04:04

    Schema Drift That Fixes Itself — Letting AI Patch Your Pipeline Without a Ticket

    04:04

  18. 04:30

    Stop Measuring Uptime — The New SLA Every Senior Data Engineer Is Moving To

    04:30

  19. 05:11

    LangGraph + Airflow — The Production AI Agent Pattern Data Teams Are Shipping

    05:11

  20. 02:22

    How I Built a Complete Data Engineering Pipeline from a Teams Message Using Claude Code

    02:22

  21. 04:01

    12-Month Legacy Migration Done in 6 Weeks — The AI-Driven Playbook for Data Teams

    04:01

  22. 04:07

    Let Claude Write the Data Engineering Tests You Forgot — Prompt Patterns That Actually Work

    04:07

  23. 03:48

    Natural Language to SQL in Production — 3 Wins and 3 Disasters

    03:48

  24. 03:30

    Your Data Passed Every Test and Is Still Wrong — Semantic Data Validation Explained

    03:30

  25. 04:29

    Your LLM Bill Is About to Explode — Token Budgets as a First-Class Pipeline SLI

    04:29