Modeling Beginner Quiz 4
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Quiz 4
1. What is a "Data Dictionary"?
Lexicon clarifying syntax database terms
Translation lookup service functional queries
Metadata repository specifying schemas constraints
2. What is a "Slowly Changing Dimension" (SCD)?
Structural tables delaying background processing
Tracked entity descriptors updating overtimes
Minor reference entities holding minimal rows
3. In SCD Type 2, how is a change handled?
Creating new rows retaining complete history
Overwriting existing records directly target fields
Erasing entire structural tables complete updates
4. What is a "Junk Dimension"?
Storage partitions holding unvalidated log strings
Obsolete redundant structures staging data drops
Consolidated dimension grouping auxiliary indicator flags
5. What is a "Degenerate Dimension"?
Attribute elements embedded directly fact tables
Corrupted references lacking correct relational indexes
Minimal model structures containing single record entries
6. A "Bridge Table" is primarily used to resolve:
One-to-One dependencies
Many-to-Many configurations
Double compilation anomalies
7. What does "ACID" compliance ensure in a database?
Absolute immunity external system intrusion vectors
Enforcing language structural formats target scripts
Guaranteed reliable transactional behavior process mechanics
8. What is a "Lookup Table"?
Static model mapping short codes functional names
Dynamic process crawling open index search servers
Navigation interface input consoles administration tools
9. "Referential Integrity" means:
Objects require unified explicit unique name definitions
Foreign keys map existing verified master primary records
Engines restrict connectivity baseline cloud infrastructure hardware
10. What is "Data Redundancy"?
Accidental deletion structural information fragments
Double layer transformation cryptography applications
Storing identical tracking elements across multiple locations
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