Mid From PDF SQL SQL & Databases

Master-Master Replication:?

Q: Master-Master Replication:?

Short answer: Two or more databases act as both masters and slaves, allowing for both read and write operations on any node. Advantages: High availability and load balancing for both reads and writes. Disadvantages: Potential for data conflicts when writes happen simultaneously on multiple nodes. Real-world example (ShopNest) ShopNest’s SQL Server database stores customers, products, and orders. Good indexes and clear foreign keys keep checkout queries fast and safe. Say this in the interview Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.

Short answer: Two or more databases act as both masters and slaves, allowing for both read and write operations on any node. Advantages: High availability and load balancing for both reads and writes. Disadvantages: Potential for data conflicts when writes happen simultaneously on multiple nodes.

Real-world example (ShopNest)

ShopNest’s SQL Server database stores customers, products, and orders. Good indexes and clear foreign keys keep checkout queries fast and safe.

Say this in the interview

Define — one clear sentence (the short answer above).
Example — relate it to a project like ShopNest or your real work.
Trade-off — when you would not use it.

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