PPT-Data Streams

COMP3211 Advanced Databases Dr Nicholas Gibbins nmgecssotonacuk 20142015 From Databases to Data Streams 2 Traditional DBMS makes several assumptions persistent data storage relatively static records. Email and news articles are natural examples of suc streams eac haracterized topics that app ear gro in in tensit for erio of time and then fade The published literature in particular researc 57356eld can seen to exhibit similar phenomena er uc long Assumptions Advantages Tao Huang, . Shrideep. . Pallickara. , Geoffrey Fox. Community Grids Lab. Indiana University, Bloomington. . {. taohuang. , . spallick. , . gcf}@indiana.edu. Outline. Analysis of existing Collaboration and Annotation Systems. of . Riparian Forestation . on . Water Quality . in . Urban Streams. Aana Taylor-Smith, UNCW Honors Student. Supervisor: Brian S. . Arbogast. , PhD.. UNCW Department of Biology and Marine Biology. . Data Streams: Lecture 12. 1. CS 410/510 Data Streams. Lecture 12: . Stream Warehousing with DataDepot. Kristin Tufte, David Maier. Thanks to: Theodore Johnson; Lukasz Golab; Spence Seidel; Vladislav Shkapenyuk. Matei. . Zaharia. , . Tathagata. Das, . Haoyuan. Li, Scott . Shenker. , Ion . Stoica. University of California, Berkeley . Stream processing and the problem. Processing real time data as they arrive:. mindbogglingly. big they are.. Massive data streams. Douglas Adams – Hitchhiker’s Guide to Big Data. Massive Data Streams . SDO (The devil we know!). 650 TB of data a year. Storable / Distributable. A match made on earth. USGS, . SouthAtlantic. Water . Science . Center. NC/SC Associate National Map Liaison. Silvia Terziotti. Elevation and Hydrography. a. re inherently linked. One forms the other. Data Streams: Lecture 15. 1. CS 410/510. Data Streams. Lecture . 15: How Soccer Players Would do Stream Joins . & Query-Aware Partitioning for Monitoring Massive Network Data Streams. Kristin Tufte, David Maier . Streams Declarative— More concise and readable Composable— Greater flexibility Parallelizable— Better performance What is a stream? A stream is “a sequence of elements from a source that supports data processing operations.” Ways to Read Files. Streams. Scanner. Class. Files. Class. RandomAccessFile. Class. 2. Java I/O Streams (overview). Writing data to / Reading data from files (or other data sources). Two Choices: Binary-Formatted or Text-Formatted Data. Tao Huang, . Shrideep. . Pallickara. , Geoffrey Fox. Community Grids Lab. Indiana University, Bloomington. . {. taohuang. , . spallick. , . gcf}@indiana.edu. Outline. Analysis of existing Collaboration and Annotation Systems. Krogstad. , J. Fridley and L. M. . Moskal, . 2009. . Small Stream Mapping Method: Difference Algorithm (LDA) Using LiDAR and . LandSAT. . Factsheet # 11. . Remote Sensing and Geospatial Application Laboratory, University of Washington, Seattle, WA. Digital version of the fact sheet can be downloaded at: . Skadelik. , CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons. Average. major ion. concentrations (mg/L) in North American rivers. Ca. 2+. 21.2. HCO. 3. -. 72.3.