Can you explain what consistency means in the context of databases?
In databases, consistency ensures that any transaction will bring the database from one valid state to another, maintaining data integrity.
What are the different types of consistency models?
There are several types of consistency models, including strong consistency, eventual consistency, and causal consistency, each with its own guarantees.
How does ACID relate to consistency?
ACID stands for Atomicity, Consistency, Isolation, and Durability. Consistency is a key part of ACID, ensuring that transactions only bring the database to valid states.
Can you give an example of a consistency issue?
Sure! A common issue is the lost update problem, where two transactions read the same data and then update it, leading to one update being overwritten.
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