Free Course — No signup required

Data Modeling
in 5 Days

ER diagrams, normalization, dimensional modeling, NoSQL patterns, and schema evolution — design databases that scale and stay maintainable.

5 lessons
Self-paced
~60 min/day
Free forever
No account needed
Start Day 1 — Free → See what's covered
What you'll learn

Data Modeling in 5 Days

Free 5-day data modeling course. ER diagrams, normalization, dimensional modeling, NoSQL patterns, schema evolution.

  • Draw accurate Entity-Relationship (ER) diagrams
  • Normalize schemas to 3NF and BCNF
  • Design star and snowflake schemas for analytics
  • Model documents, graphs, and time-series in NoSQL
  • Evolve schemas safely in production databases
  • Choose between relational and NoSQL storage appropriately
3NF
normalization
Star
schema
5
lessons
$0
cost
5-Day Curriculum

Every lesson has a real exercise.
No theory without practice.

01
ER Diagrams
Entities, attributes, relationships, cardinality, ERD notation (Crow's Foot, UML)
entitiescardinalityCrow's Foot
→
02
Normalization
1NF through BCNF, functional dependencies, when to denormalize
1NF-3NFBCNFdenormalization
→
03
Dimensional Modeling
Facts, dimensions, star schema, snowflake, slowly changing dimensions (SCDs)
star schemafactsSCDs
→
04
NoSQL Patterns
Document modeling, adjacency lists for graphs, time-series design, key-value patterns
document modeladjacency listtime-series
→
05
Schema Evolution
Migrations, backward compatibility, expand-contract pattern, tools (Flyway, Liquibase)
migrationsFlywayLiquibase
→
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Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Trained 400+ professionals across universities and federal agencies. Built production systems at scale. This course is practical first — every lesson has working examples and an exercise you can finish in under an hour.

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