Using a case as an example describe the various techniques that are used to implement distributed databases concepts shown in the diagram below       [14 Marks]

b)   Give an example of a set of requirements whose solution would need to combine OLAP, OLTP and NoSQL. Describe an architecture integrating these elements in the distributed databases system design.           [11 Marks]
 

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Directory Management Query Processing Distributed DB Design Concurrency Control Deadlock Management Fig. 1.7 Relationship Among Research Issues Replication Reliability Directory Management Query Processing Distributed DB Design Concurrency Control Deadlock Management Fig. 1.7 Relationship Among Research Issues Replication Reliability