Data warehouse architecture CIF, DM Bus Matrix Star schema Topics / Techniques Data warehouse architecture CIF, DM Bus Matrix Star schema Conformed dimensions Conformed facts Dimensional vs Entity-Relationship March 2004 91.4904 Ron McFadyen

Additive, non-additive, semi-additive PK FKs DD CD Topics / Techniques Fact Factless Indicators Additive, non-additive, semi-additive PK FKs DD CD March 2004 91.4904 Ron McFadyen

Transaction, Periodic Snapshot, Accumulating Snapshot Topics / Techniques Fact Transaction, Periodic Snapshot, Accumulating Snapshot normalizing the fact table Density: dense / non-dense Currencies Allocating facts to a lower granularity fact table March 2004 91.4904 Ron McFadyen

Snowflaking, Normalization Outrigger Mini dimension Audit Keyword Junk Topics / Techniques Dimension: Snowflaking, Normalization Outrigger Mini dimension Audit Keyword Junk Role-playing March 2004 91.4904 Ron McFadyen

Many-to-many relationships Bridge tables Topics / Techniques Dimension: Many-to-many relationships Bridge tables Fixed-depth vs ragged hierarchies Slowly Changing Dimensions: Type 1, 2, 3, hybrid March 2004 91.4904 Ron McFadyen

Natural key, surrogate key Intelligent/Smart key Topics / Techniques Keys PK, FK Natural key, surrogate key Intelligent/Smart key March 2004 91.4904 Ron McFadyen

Accessing multiple fact tables Many-to-one-to-many join Multi-pass SQL Topics / Techniques Accessing multiple fact tables Many-to-one-to-many join Multi-pass SQL Drill across Drill down March 2004 91.4904 Ron McFadyen

attributes: PK, weighting factors Banding tables non-equi join Topics / Techniques Bridge tables: various applications attributes: PK, weighting factors Banding tables non-equi join Point-in-time balances nested SQL sequencing of SKs March 2004 91.4904 Ron McFadyen

Topics / Techniques Aggregation: Shrunken Lost Collapsed Transparency Performance March 2004 91.4904 Ron McFadyen

Topics / Techniques Physical database Partitioning Bitmaps ETL CDC techniques late-arriving rows March 2004 91.4904 Ron McFadyen