Sharding & Replication · question
Question 3 of 51
Explain the three main types of data partitioning.
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1. Horizontal Partitioning (Sharding)
- Divides rows of a table across multiple partitions
- Each partition contains the same columns but different rows
- Example: User table split by user ID ranges (1-1000, 1001-2000, etc.)
2. Vertical Partitioning
- Divides columns of a table across multiple partitions
- Each partition contains different columns but all rows
- Example: User table split into UserBasicInfo(id, name, email) and UserProfile(id, bio, preferences)
3. Functional Partitioning
- Divides data based on feature or service boundaries
- Different tables/schemas for different business functions
- Example: Separate databases for user management, order processing, and inventory
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