Microservices - Migration from Monolith
Which of the following is the correct description of
horizontal decomposition in microservices database design?Which of the following is the correct description of horizontal decomposition in microservices database design?
easy📝 Conceptual Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Define horizontal decomposition
Horizontal decomposition splits data by rows, for example, dividing customers by region or user ID ranges.Step 2: Eliminate incorrect options
Splitting data by columns or tables based on functionality describes vertical decomposition, C is merging (not decomposition), and D is about engines, not decomposition strategy.Final Answer:
Dividing data by rows, such as by customer or region -> Option AQuick Check:
Horizontal decomposition = split by rows [OK]
Quick Trick: Horizontal = split by rows, vertical = split by columns [OK]
Common Mistakes:
- Mixing horizontal with vertical decomposition
- Thinking horizontal means merging databases
- Confusing database engine separation with decomposition
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