Question: Consider a multidatabase system in which every local site ensures local serializability, and all global transactions are read only. a. Show by example that nonserializable

Consider a multidatabase system in which every local site ensures local serializability, and all global transactions are read only.

a. Show by example that nonserializable executions may result in such a system.

b. Show how you could use a ticket scheme to ensure global serializability.

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