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PowerPoint Presentation• Preliminaries – Cost model – Sort-based if r.C = s.C then output r,s pair Nested Loop Join (NLJ) - Memory management - Parallel
3320 1 Query Processing Introduction to Databases CompSci 316 Spring 2020 1 Overview • Many different ways of processing the same query • Scan Sort Hash Use an index…
CPS216: Advanced Database Systems Data-intensive Computing Systems Introduction to MapReduce and Hadoop Shivnath Babu Word Count over a Given Set of Web Pages see bob throw…
Slide 1Shivnath Babu Map function Reduce function MapReduce job Map function Reduce function MapReduce job Time Next few slides are from: http://www.slideshare.net/hadoop/practical-problem-solving-with-apache-hadoop-pig
CompSci 516 Database Systems Lecture 12 Map-Reduce and Spark Instructor: Sudeepa Roy 1Duke CS Fall 2017 CompSci 516: Database Systems Announcements • Practice midterm posted…
TheFinancialEdge™ Query Guide 101911 ©2011 Blackbaud, Inc. This publication, or any part thereof, may not be reproduced or transmitted in any form or by any means, electronic,…
CPS216: Advanced Database Systems Data-intensive Computing Systems How MapReduce Works in Hadoop Shivnath Babu Lifecycle of a MapReduce Job Map function Reduce function Run…
An Overview of Query Optimization in Relational Systems Surajit Chaudhuri Microsoft Research One Microsoft Way Redmond WA 98052 +1-425-703-l 938 surajitc@ microsofkcom 1…
access access Part 2 objective Use the Query Wizard. Work with data in a query. Use Query Design View. Sort and find data. Filter data Apply AND criteria. Apply OR criteria.…
External Sorting Query Processing Sorting Two-Way Merge Sort External Merge Sort Comparisons Replacement Sort B+-trees for Sorting 71 External Sorting Sorting Tables Larger…
Another decision makers database leaked https:hackenproofcomcontacts Database: Unprotected MongoDB instance Country: USA Type of data exposed: Contact information phone email…
MongoDB World New York City, June 23-25 #MongoDBWorld See what’s next in MongoDB including • MongoDB 2.6 • Sharding • Replication • Aggregation http://world.mongodb.com…
[MS-SEARCH]: Search Protocol Intellectual Property Rights Notice for Open Specifications Documentation Technical Documentation. Microsoft publishes Open Specifications documentation…
CPS216 Project Report Matrix Multiplication in MapReduce Botong Huang and You Wu Will Department of Computer Science Duke University {bhuang, wuyou}@cs.duke.edu 1 INTRODUCTION…
Analysis in the Big Data Era 9262011 2 Massive Data Data Analysis Insight Key to Success = Timely and Cost-Effective Analysis Starfish Hadoop MapReduce…
Query Processing: A Systems View Introduction to Databases CompSci 316 Fall 2018 Announcements Thu., Nov. 15 • Project milestone #2 feedback on Gradescope by Friday •…
Slide 11 CPS216: Data-intensive Computing Systems Failure Recovery Shivnath Babu Slide 2 2 Key problem Unfinished transaction ExampleConstraint: A=B T 1 : A A 2 B…
External Sorting Torsten Grust Query Processing Sorting Two-Way Merge Sort External Merge Sort Comparisons Replacement Sort B+-trees for Sorting 7.1 Chapter 7 External Sorting…
Slide 1 Slide 2 After completing this lesson, you should be able to do the following: Limit the rows retrieved by a query Sort the rows retrieved by a query Slide 3 "…retrieve…
Slide 1CPS216: Data-Intensive Computing Systems Data Access from Disks Shivnath Babu Slide 2 Outline Disks Data access from disks Software-based optimizations – Prefetching…