Flashcards
11,105 cards in 101 decks, written from the same source as the concepts. Space to flip, arrows to move, K and R to sort what you know from what you do not. Progress lives in your browser.
Data & Feature Engineering
The pipelines, formats and contracts that decide whether a model ever sees correct inputs.
Data Modelling & Storage
Columnar formats, table formats and the lakehouse, partitioning, and modelling choices that decide query cost.
Batch & Streaming Pipelines
Event time versus processing time, watermarks, exactly-once semantics, backfills and orchestration.
Feature Stores
Offline-online parity, point-in-time correctness, materialisation, and the failure they exist to prevent.
Data Quality & Contracts
Expectations and assertions, schema evolution, producer-consumer contracts, and detecting silent corruption.
Data Governance & Lineage
Catalogues, column-level lineage, retention and deletion, access control and provenance for training corpora.