Title: Information Systems for Engineers / Topic 7

Q: What are the ACID Properties?
A: 1. Atomicity: A transaction gets fully executed or not at all
2. Consistency: Database is consistent at all times
3. Isolation: "As if" transactions were executed serially
4. Durability: A change will not be lost (power outage, ...)

Q: What is Dirty Read?
A: A transaction sees uncommited data from another transaction.

Q: Nonrepeatable Read
A: A transaction reads the same data multiple times, but find it changed.

Q: What is Phatom Read?
A: A transactin runs the same quera multiple times, and finds extra rows.

Q: What is Serialization Anomaly?
A: It is not possble to order the same transactions sequeantially and get the same effects.