Dimensional Modeling
(การสร้างแบบจำลองมิติตัวแปร)
Definition
Dimensional Modeling (การสร้างแบบจำลองมิติตัวแปร) Hard Skill
Dimensional Modeling is a data design technique used to structure data into facts and dimensions for efficient querying and analysis, primarily applied in data warehousing and business intelligence.
Expertise Level
Level 1
Basic
1. Understands the basic concepts of facts and dimensions.
2. Can identify simple dimensions and fact tables in a database.
3. Knows common terminology such as star schema and snowflake schema.
Level 2
Intermediate
1. Can design dimensional models for moderately complex business scenarios.
2. Applies principles of normalization and denormalization appropriately in dimensional design.
3. Able to create star and snowflake schemas with correct relationships.
Level 3
Advanced
1. Designs complex dimensional models optimized for performance and scalability.
2. Integrates advanced techniques such as slowly changing dimensions and aggregate fact tables.
3. Can lead data warehouse modeling projects and mentor others in dimensional modeling best practices.
