🗄️ Data Engineer · Stage 1 of 5

Foundation

What data engineers build, OLAP vs OLTP, warehouse vs lake vs lakehouse, ETL vs ELT. Four concept pages, no code.

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In this stage

  1. ConceptWhat is a Data Engineer
  2. ProblemJoining Postgres, Stripe, and Salesforce for Analyticseasy
  3. ConceptOlap vs Oltp
  4. ProblemPostgreSQL Analytics Performance Issueeasy
  5. ConceptWarehouse Lake Lakehouse
  6. ProblemLakehouse Architecture for 50TB of JSON Eventseasy