AnSwering querieS adreSSed to Several databaSeS according ... - Core

Recommend Documents

Ontop: Answering SPARQL Queries over Relational Databases

guage in the Semantic Web community. These vir- tual RDF .... Server) and the most popular open-source databases ... bui

Answering Imprecise Queries over Autonomous Web Databases

express their needs and may formulate queries that lead to ...... Robust Similarity Estimation. Ford. Chevrolet. Toyota. Honda. Dodge. Nissan. B M W. 0.25. 0.16.

Ontop: Answering SPARQL Queries over Relational Databases

relational data sources through a conceptual representation of the domain of interest, provided in terms of an ontology,

Answering Pattern Match Queries in Large Graph Databases Via ...

Answering Imprecise Queries over Web Databases - VLDB Endowment

While the problem of supporting imprecise database ... Challenges: The first challenge in realizing the ... [3, 7, 4, 5] has been done, the solutions suggested.

Answering queries using pairings

Mar 11, 2014 - Outsourcing data in the cloud has become nowadays very .... this is a good feature since data can be encrypted even before potential read-.

Querying several conflictual databases

consistently answer queries even if the database contents are contradictory. ... this paper is the specification of a query-evaluator for answering closed and open ...

Answering Conjunctive Queries with Inequalities

Dec 12, 2014 - are inputs), while the data complexity of CQs (query is fixed) is in AC0 [1]. Yannakakis [22] showed that evaluation of acyclic CQs has ...

Answering Queries Determined by Views

Dec 8, 2005 - any two databases D1,D2 it holds: V(D1) = V(D2) implies Q(D1) = Q(D2) ..... of the variables used in Q. Observe that all variables of. Rc are also ...

Answering Arbitrary Conjunctive Queries over

paper considers how to generate the most complete answer possible to a positive conjunctive query over the ... examples include traffic monitoring, sensor networks, and status information. While the ... of free CPUs and the number of running jobs. ..

Answering the phone, referring calls, answering queries ... - EnSave

provides support to a program manager to publicize a program, track participants, ... Enter customer data into an online

Answering the phone, referring calls, answering queries ... - EnSave

provides support to a program manager to publicize a program, track participants, ... Enter customer data into an online

Answering Conceptual Queries with Ferret - Semantic Scholar

Third, answering a conceptual query may require a programmer .... Information provided by some tools is best represented by mul- ...... Personal blog, May 2007.

Answering Order-Based Queries Over XML Data*

May 14, 2005 - quests for data and return their answers tagged in XML. A key issue in XML data ... We proceed with Section 2 that describes our techniques, while in Section 3, their .... efficient XML query pattern matching. ICDE, 2002. [2] C.

Answering English Queries in Automatically Transcribed ... - CiteSeerX

Jul 11, 2007 - Abdusalam F.A. Nwesri S.M.M. Tahaghoghi Falk Scholer. School of ..... queries; we also plan to use stories, rather than overlapping windows of ...

Hippocampus: Answering Memory Queries using ... - eXascale Infolab

requested memory is reconstructed from a group of people by exchanging pieces of .... an initial list of persons having attended ISWC. The system then starts ...

Answering linear optimization queries with an ... - CiteSeerX

Feb 12, 2008 - portion of the memory to the outer layers of the SAO index. .... We briefly review the earlier onion index [8] for linear optimization queries against ..... compared to the top tuples that are found on the inner ACLs, the top tuples th

Answering Queries by Semantic Caches - CiteSeerX

relational operations across the caches for answering queries, and we consider ..... The answer set of Q with respect to database DB is the set of all Q's answers.

Quantifying Privacy Leakage Through Answering Database Queries

within a selected population in the database can be submitted to the data center. ...... For the former, a decision maker can decide if he will purchase a piece of ...

Hippocampus: Answering Memory Queries using Transactive Search

memory queries that we call Transactive Search: The user- requested memory is .... Search, the Linked. Open Data movement has pushed the availability of large ... Research in this domain focused on extending database technologies with.

Answering General Time-Sensitive Queries - CiteSeerX

Aug 3, 2010 - large number of searches, such as over blogs and news archives. So far ..... weighted sum of the relevance scores of the top-k matching.

Answering Conceptual Queries with Ferret - CiteSeerX

Programmers seek to answer questions as they investigate the func- tioning of a software system ... grammer asks many different questions, such as âwhere is this ...... In this earlier laboratory study, Ferret was ... end-of-day interview. .... duc

Answering queries across mappings - FORTH-ICS

Jul 5, 2005 - [2] S. Abiteboul, R. Hull, and V. Vianu. Foundations of Databases. ... [4] A. K. Chandra and P. M. Merlin. Optimal implementation of conjunctive ...

Answering reachability queries on streaming graphs

involve huge graphs and require fast algorithms to test for reachability ... In this paper we will review current graph reachability algorithms ... instance, if we want to answer queries such as: list all the cars that traveled ... which is then redu

AnSwering querieS adreSSed to Several databaSeS according ... - Core

Download PDF

0 downloads 0 Views 323KB Size Report

Comment

in the database context and to specify a query evaluator which answers queries addressed to several databases, according to a majority approach. This present.

! "# !! $ %

& '(() '* '(() () +

#

' , '(( , ' , ' -./01#2) -./012) - 1"2) -012) - 132) - 142) - /142) -0& 142) -.142) -.112) - 2+ ( 5( ' , 5 ( , ' '6 + ' ' ( 5 ' , ' 5 + ' 5 6 5 ' 5 7 ' , '(( , ' + ) 7 '(( , , ' '(+ , ' , 5 ) ' , '(( 8 , 5 + , ' , 5 ' + , 5 '(( 7' $ ( , ,5 (+ 9 ) ' , '(( 8 5 ( 8 , 5 5 ( (+ '((

', ' + % ) , '(( , ) , , 6 5 : 7 ( 7 (;) ' '(( < ' ) ' 5 + 9 , 7' '(() , ' , ( 7' 6 5) ' '(( < ' ' ( ) ' , '(( ' ( + ) , ', ' 6 5) ' , '(( ' 8+ . = >=? -.142) -.112 ' 5 '(+ 8 5 6 , '(( '* '(( '(( + 8 ' ''( 6 , '* 5 ) ' ( 5 ( , ' , '+ . = >= 8 5 ,' , '(( , ' ' , 5+ 5 6 6 ( , '* '(( ' = 5 6+ 8 ' 8 ( :(() '

, ; 5 5 ( '* + ' $ , 7 5 5 7 ) ( '* + ) 5 - #2 - 2+ 9 (= , 5+ 9 ) 5 , 5 , ' * 5 ' (

:/* % ;+ 9 (( 5 6 , , ' :5 5 5 , ' ;+ 9 ' .6 '+ 9 ") 5 ( @ $ '= '* '( ( + 0 ) 8 ' (' , ) 5 5 ' '( , ' + 0 ! , $ , 8 + A , 7 5 5 7

+ & 5 ' , $ :++ , ( ,; :++ , , , ;+ ' * + $ 5 6 3+

' , ( ' , 5 + 0 ) 5 ' 8 '+

+ ' 5 + B - 2 B - 2 5 '+

, 5 ' 8 < B -2+ '' 8 < @ $ , ' + ) ' ) @

, ) ++ + 5 , + + 9, 5 , ' ) 5 , ' '(( + , ' 5 ' , ' '( : ) 5 ' ; , ' , '(( ' , ' + % ) , 5 , :' ; , ' ) ) : ; , ' ' + 8 '(( + '(( +

(( , , ' '(+ (( , ( "

) , ' ( ' , , 5( , '< 5 ( , ' :' ;+ ' $ A $ , '

, + 5 $ , ' ' , ' + , ( 9, ' 6() 5 ' , , ' + ) 5 '(( 5 , ' ) ' , , ' , ' , 5 , ' + 5 5 , ' , ' , , ( ' ,

, ( + , ' 8 , , 5(
: :";;+ % ' ) 5 6 $ ( ( @ 5 ' ( '( , ' + 9) 5 6) 5 HN0J 7 H P '( :# Q+++Q; IJ 5 '

, 5 ? ( ' , 5 ?+ 5 ' P ? ( + 9 ' 5 ) 5 HIJ 7 H P '( :# Q+++Q; IJ5 5 P 5 ' 5 P 5 + 9, 5 ( @ 6 , ) 5 ((

' , 5 ' < @ 7 8) -0;= >-8;8 /+ @ 7 8 ' )

, ,

, ( K -0;= ' '* K >-8;8 ' ) ' 6 , , ' / ' ( + % ' ) 5 (( $ ' :!; :3; 5 , 5< @ 7 8 , :!+#; -0;= , :!+; >-8;8 :"3#; / , :"3; , 7 ) ' ' '$ ' :!; ' < :!#;: ; : ; :>-8;8 ; :!;:; : ; : ; :@ 7 8; :!";:; : ; : ; : 8/ -;8 =; :!;:; : ; : ; : ; : -0;=; 5 7 5 < H& ? 6 5 : ' 6 , , ' ;J) H& ? 6 5 : ;J) HN0 :

, ( ;J) HN0 : '* ;J H :

, ( ;J) H : '* ;J+ 5 , 7 , + ( $' !+" 5 < 80:: ;;8;:=+ /(( 5 ( + 9 0 %&(

- %1 . 2 & 3%1.2**4) ' #3"4 , 5 6 7 (

) ( ""+ 0(R() #111+ - 2

+ + , , + 9 " 0 302%864) +

- 132

L++ + 9( , 5( 6 5( + 7 (

) 4"