Data foundations & trustworthy retrieval
Which source is authoritative, and can you retrieve the right facts safely?
Distinguish operational databases, caches, search indexes and model context. Compare exact lookup, keyword, vector and hybrid retrieval using relevance, freshness and access requirements.
What you need to understand
- Relational modeling, SQL, transactions and indexes
- Data lineage, quality, versioning and deletion
- Embeddings, chunking, RAG, hybrid search and reranking
- Context budgets, caching, citations and retrieval evaluation
Learn it in context
Course lessons use your existing training access. The practice workbook and curriculum map are free.
Evidence to bring to review
A source-to-answer trace, an access-filtered retrieval comparison and evidence that changed or removed data is handled deliberately.
A highly relevant document is stale or no longer authorized. Show why relevance alone cannot admit it.