Module 8: Freshness, Contracts, and Documentation Slides
Slide walkthrough for Module 8 of Production Analytics Engineering with dbt: Metrics, Semantic Layers & Lineage: Make data understandable, current, and...
This slide page is the visual review companion for the full course module. Use it to recap the architecture, examples, exercises, production warnings, and takeaways after reading the lesson.
Slide Outline
- Freshness, Contracts, and Documentation - Make data understandable, current, and safe to change.
- Learning Objectives - 3 outcomes for this module
- Why This Module Matters - A trusted model needs more than correct SQL. Users need to know what it means, who owns it, how fresh it is, and what ch
- The Mental Model - Lesson section from the full module
- Tiny Example - Lesson section from the full module
- Interactive Check - Lesson section from the full module
- Inline Practice Lab - Lesson section from the full module
- Self-Check Quiz - Lesson section from the full module
- Real-World Use Cases - Reliable executive dashboards that do not disagree across teams, AI analytics agents that query governed metrics instead of guessing SQL
- Common Mistakes to Avoid - 3 mistakes covered
- Production Notes - 1 practical notes
- Inline Exercises - 1 inline exercise
- Key Takeaways - 3 points to remember
Learning Objectives
- Explain source freshness and data SLAs
- Document models and columns clearly
- Understand model contracts and ownership
Why This Module Matters
A trusted model needs more than correct SQL. Users need to know what it means, who owns it, how fresh it is, and what changes are allowed.
Production Notes
- A model without an owner has no one accountable when it breaks. Ownership is part of the data product.
Common Mistakes
- Writing descriptions that repeat the column name
- Ignoring freshness until executives report stale dashboards
- Changing column meaning without updating docs
Key Takeaways
- Freshness is a quality dimension
- Documentation prevents repeated tribal explanations
- Contracts make downstream breakage less likely
Inline Exercises
-
Write the Model Contract Card
Document one model with grain, owner, freshness expectation, and important columns.
30-45 minutes - Beginner to Intermediate
- Write the model description starting with "One row per..."
- Add owner and domain
- Add a freshness expectation for the source
- Mark columns that should not change type without review
Inline lab: complete the exercise directly in the course page.