1. Presented by :1.Haithm adam2.Mostafa hassan3.Mohamed siddig4.Mohamed zein elabdeen5.Omer salih 2. Outlines: importance of transactions. Properties of transactions.…

Slide 1 CIS 720 Concurrency Control Slide 2 Timestamp-based concurrency control Assign a timestamp ts(T) to each transaction T. Each data item x has two timestamps: rt(x):…

Slide 1 Concurrency III (Timestamps) Slide 2 Schedulers A scheduler takes requests from transactions for reads and writes, and decides if it is “OK” to allow them to…

Slide 1 Prepared By: Ronak Shah Professor :Dr. T. Y Lin ID: 116 Slide 2 Concurrency Concurrency is a property of a systems in which several computations are executing and…

CIS 720 CIS 720 Concurrency Control 1 Timestamp-based concurrency control Assign a timestamp ts(T) to each transaction T. Each data item x has two timestamps: rt(x): timestamp…