'Conjunctive queries' presentation slideshows

CHAPTER 2: MANIPULATING QUERY EXPRESSIONS

CHAPTER 2: MANIPULATING QUERY EXPRESSIONS. PRINCIPLES OF DATA INTEGRATION. ANHAI DOAN ALON HALEVY ZACHARY IVES. Introduction. How does a data integration system decide which sources are relevant to a query? Which are redundant? How to combine multiple sources to answer a query?

1.04k views • 94 slides

CHAPTER 2: MANIPULATING QUERY EXPRESSIONS

CHAPTER 2: MANIPULATING QUERY EXPRESSIONS. PRINCIPLES OF DATA INTEGRATION. ANHAI DOAN ALON HALEVY ZACHARY IVES. Introduction. How does a data integration system decide which sources are relevant to a query? Which are redundant? How to combine multiple sources to answer a query?

1.12k views • 94 slides

Data integration

Data integration. Most slides are borrowed from Dr. Chen Li, UC Irvine. Motivation. Biblio sever. Legacy database. Plain text files. Support seamless access to autonomous and heterogeneous information sources. Comparison Shopping. Applications. Comparison shopping. Lowest price of the

763 views • 58 slides

Searching and Integrating Information on the Web

Searching and Integrating Information on the Web. Seminar 2: Data Integration Professor Chen Li UC Irvine. Motivation. Biblio sever. Legacy database. Plain text files. Support seamless access to autonomous and heterogeneous information sources. Comparison Shopping. Applications.

650 views • 55 slides

Searching and Integrating Information on the Web

Searching and Integrating Information on the Web. Seminar 2: Data Integration Professor Chen Li UC Irvine. Motivation. Biblio sever. Legacy database. Plain text files. Support seamless access to autonomous and heterogeneous information sources. Comparison Shopping. Applications.

553 views • 55 slides

CS276

552 views • 43 slides

Containment of Conjunctive Queries on Annotated Relations

Containment of Conjunctive Queries on Annotated Relations. Todd J. Green University of Pennsylvania March 25, 2009 @ ICDT 09, Saint Petersburg. The Need for Data Provenance.

423 views • 30 slides

Containment of Conjunctive Queries on Annotated Relations

Containment of Conjunctive Queries on Annotated Relations. Todd J. Green University of Pennsylvania March 25, 2009 @ ICDT 09, Saint Petersburg. The Need for Data Provenance.

387 views • 30 slides

Containment of Conjunctive Queries on Annotated Relations

Containment of Conjunctive Queries on Annotated Relations. Todd J. Green University of Pennsylvania March 25, 2009 @ ICDT 09, Saint Petersburg. The Need for Data Provenance.

304 views • 30 slides

Conjunctive Queries

Conjunctive Queries. Thursday, February 8, 2001. Outline. Definition of conjunctive queries Query containment Query equivalence Query minimization. Picture So Far. Recursive queries. DATALOG. FO. Non-recursive Datalog. Non-monotone queries. Picture for This Lecture. DATALOG.

295 views • 29 slides

Minimizing View Sets without Losing Query-Answering Power

Minimizing View Sets without Losing Query-Answering Power. Chen Li Stanford University joint work with Mayank Bawa and Jeff Ullman. A web-caching scenario. user query. Client. cache. source query. answer. Server. Client. Cached query results: Q1(T,A,Pr) :- book(T,A,Pub,Pr)

392 views • 28 slides

Query languages, equivalence & containment

325 views • 20 slides

The Complexity of Causality and Responsibility

192 views • 19 slides

Minimizing Conjunctive Queries

Minimizing Conjunctive Queries.

156 views • 8 slides