Database Management Systems And The Block Nested Loop Join

Naveen Kumar Chandragiri Rakesh Singrikonda Email: nchandr2@kent.edu Email: rsingrik@kent.edu PROJECT REPORT BLOCK NESTED LOOP JOIN December 12,2014 Advance Database Management Systems Fall 2014 PREPARED BY: NAVEEN KUMAR CHANDRAGIRI RAKESH SINGRIKONDA Naveen Kumar Chandragiri Rakesh Singrikonda Email: nchandr2@kent.edu Email: rsingrik@kent.edu Block Nested Loop Join 1. Abstract: The project deals with the Block Nested loop Join operation on given relations. In the project, we used Adventure Works database to demonstrate the results. We observed the execution of the block nested loop Join. The project also takes into account the technical details of each relations, for example, what is the tuple size of the relation, what are the total number of blocks allocated for each relation, what are the number of tuples per block and so on. The algorithm for the Join are detailed and explored. Also for the algorithm, the best, the worst case is being elaborated. Further, even the available memory size, allocated memory size, are taken into account while retrieving the tuples from the relations. The number of Block transfers, and number of I/O seeks required for each relation are calculated. Finally, these time of each relation in the algorithm are compared to determine the role of tuples in Block Nested loop join. 2. Implementation: For the implementation purpose, Adventure Works is used as the database and Java is used for Programming. 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