University of Pennsylvania. CIS 650 Database & Information Systems ... Lottery scheduling based on number of tickets. Now handles both selectivity and cost ...
Minimum Cost Maximum Benefit Condition Monitoring ... Kone (4th largest supplier of elevators in the world) (Finland) VTT ... Mean, Kurtosis, Standard Deviation ...
... and years of used cars. Used(price, year) :- Cost(model, ... cars. Cheap(price) :- Cost(model,price) Car. Sale. Information. Query: What price do cars made ...
Query: What price do cars made in 1996 sell for? Query(Price, '1996'):- Cost(Model,Price) ... Cheap(price):- Cost(car,price) Cost(?,price) :- Cheap(price) ...
Used cars - prices - dealer - year. Car sale information. 4. Data Integration Example ... Query: find the prices of cars that we can buy at cost. Database relations ...
Il travaille sur la gestion de la m ta-donn e dans les entrep ts de donn e ... Le poids peut tre affect chaque pr dicat et/ou chaque aspect de la qualit ...
Title: Database Design Author: dan Last modified by: uw Created Date: 1/5/1998 10:52:07 AM Document presentation format: On-screen Show Company: uw Other titles
... what if the view contained no ... a view does not export a join variable, and does not contain ... Along the way, find out also which view head variables ...
... as the subset of a query over the mediated schema the 'open world assumption' ... Sources may not have all the data from the domain 'open-world assumption' ...
... Objectives Determine location and thickness of soil and rock strata ... must be determined during geotechnical investigation Can be accomplished by ...
Today's Trivia Question. 4. A Problem ... where show.title = 'Star Wars' and show.genre = 'sci-fi' ... where $s/title/text() = 'Star Wars' and $s/genre/text ...
Joann Ordille (Avaya) VLDB 2006. Agenda. A few perspectives on the last 10 years ... is emerging that Forrester has coined 'information fabric,' a term defined as a ...
Car review database: V2(product, review) :- Review(product, review, 'auto' ... V2 could even be empty although Review(p, r, 'auto') is not. Interpretation of Views (2) ...
University of Washington. Govind Kabra. University Highlights ... MetaCrawler, 1995. Erik Selberg now works at MSN Search. Internet Softbots, 1991. KnowItAll ...
Lecture #9 Data Integration May 30th, 2002 Agenda/Administration Project demo scheduling. Reading pointers for exam. What is Data Integration Providing Uniform (same ...
Computer and Information Science, University of Oregon, USA. Peishen Qi ... (and (customercity ?C - Customer 'Eugene') (customerfname ?C - Customer ?x - String) ...
Get the answers from the sources, filter them if needed and combine them ... Closed world assumption vs. open world? Virtual Integration Approaches. Logic ...
Our aim here is not just to find an equivalent rewriting ... Conjunctive queries are able to express select-project-join queries. h(X,...) :- a(Y,...), b(Z, ...
Consumption of a tall (355mL) caffeinated coffee will have no effect of the ... Participants were instructed to drink the coffee but to keep their cups. ...
The LSD (Learning Source Descriptions) System. Suppose user wants to integrate 100 data sources ... LSD provides attribute correspondences, but not complete mappings ...
area day-phone extra-info. 13. Putting It All Together: LSD ... It can be filled in using some type of code, and corrected by hand. 15. A Few Mapping Examples ...
You should have a good understanding of how you will be using the ... Bitmap indices (a bit indicates a value) Multidimensional indices. R-trees, kD-trees, ...
... also define mappings between ... We find all views that define book with author and title, and we compose ... Define each source as the subset of a query ...
User queries refer to the mediated schema. Data is stored in the sources in a local schema. ... Closed world assumption vs. open world? Kambhampati & Knoblock ...
The end-game: 3 options. Have an in-class final exam. 5/8 2:30pm is the designated time ... SIMS/Ariadne (USC/ISI) Emerac/Havasu (ASU) BibFinder (ASU) ...
qS qG. qG qS ... to the concept specified by qG over the global schema. ... s qG. Thus the content of each source is characterized in terms of a view qG over the ...
This is not a survey on data integration (See the paper in the proceedings ... Revivals by Graefe (1993) and DeWitt (1998). Query scrambling [Urhan & Franklin] ...