Data Terms Advanced Quiz 4
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Quiz 4
1. What is "Change Data Capture" (CDC)?
Scanning tables periodically
Detecting changes via logs
Flagging records manually
2. What is "Data Orchestration"?
Automating dependent data tasks
Sorting data alphabetically
Choosing music for servers
3. What is a "Dead Letter Queue" (DLQ)?
Store old emails
Archive old data
Hold unprocessed records
4. What does "Schema-on-Write" imply?
Define structure on read
Predefine structure before write
Auto-create schema by filename
5. What is "Exactly-Once Semantics"?
Process a message once despite failures
Read data only once
Each table has one primary key
6. What is "Reverse ETL"?
Delete warehouse data
Export to CSV
Move warehouse data to tools
7. What is "Data Compaction"?
Crush old drives
Merge small files efficiently
Remove spaces in SQL
8. What is a "DAG"?
Workflow model with no loops
Node-based database
Company hierarchy diagram
9. What is "Push-based Ingestion"?
Poll a source periodically
Upload files manually
Source sends data immediately
10. What is "Micro-batching"?
Process monthly
Split streams into small batches
Process one row at a time
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