How do shared locks work?

Can you explain how shared locks work in databases?

Sure! Shared locks allow multiple transactions to read a resource simultaneously without modifying it.

What happens if a transaction tries to write while a shared lock is in place?

If a transaction attempts to write while a shared lock is held, it will be blocked until the shared lock is released.

How do shared locks differ from exclusive locks?

Shared locks permit concurrent reads, while exclusive locks prevent any other access, including reads, until released.

Can you give an example of when to use shared locks?

Certainly! Use shared locks when you need to read data that multiple transactions can access without interference.