Modeling Intermediate Quiz 1
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Quiz 1
1. Which scenario best justifies the use of a Snowflake Schema over a Star Schema?
When query performance is the only priority
When dimensions have complex hierarchy trees
When the targeted database is strictly NoSQL
2. What is a 'Degenerate Dimension'?
Attribute elements embedded directly inside fact tables
Dimension entries deprecated in latest architectural plans
Structural tables containing critical configuration mistakes
3. In a Star Schema, what does 'Granularity' refer to?
Total record allocations counted across databases
Processing bandwidth speeds metric data pipelines
Detailed transaction levels represented per row
4. What is a 'Junk Dimension'?
Staging tables containing temporary execution drops
Consolidated dimension grouping variant metric flags
Disconnected tables lacking valid relationship paths
5. Which concept describes a dimension that is shared across multiple fact tables?
Conformed Dimension
Derived Dimension
Static Dimension
6. What is the primary purpose of a 'Role-Playing Dimension'?
Enforcing access restrictions
Creating mock testing data
Using one table many ways
7. What is an 'Outrigger Dimension'?
Tables isolated behind operational network firewalls
Dimension records referenced by alternative dimensions
Redundant backup copies preserving warehouse records
8. Which model uses 'Hubs', 'Links', and 'Satellites'?
Data Vault Modeling
Dimensional Modeling
Third Normal Form
9. What is a 'Semi-Additive' measure?
Values completely blocked from processing aggregate functions
Metric entries summing uniquely against identical field rows
Column parameters summing across some dimension boundaries only
10. What is 'Additive' data in a fact table?
Values added systematically during nightly scheduled batches
Quantitative indicators safely totaled across all dimensions
Textual properties describing underlying commercial details
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