Slide 1 Slide 2 Answering Approximate Queries over Autonomous Web Databases Xiangfu Meng, Z. M. Ma, and Li Yan College of Information Science and Engineering, Northeastern…

GATE CS Topic wise Questions Database www.gatehelp.com YEAR 2000 Question. 1 Given the relations employee (name, salary, deptno), and department (deptno, deptname, address)…

GATE CS Topic wise Questions Database www.gatehelp.com YEAR 2000 Question. 1 Given the relations employee (name, salary, deptno), and department (deptno, deptname, address)…

An Information-Theoretic Approach to Normal Forms for Relational and XML Data Marcelo Arenas Leonid Libkin University of Toronto Motivation What is a good database design?…

An Information-Theoretic Approach to Normal Forms for Relational and XML Data Marcelo Arenas Leonid Libkin University of Toronto Motivation What is a good database design?…

Closure The closure of {B1…Bk} under the set of FDs S, denoted by {B1…Bk}+, is defined as follows: {B1…Bk}+ = {B | any relation satisfies S will also satisfies B1…BkB}…

GATE CS Topic wise Questions Database www.gatehelp.com YEAR 2000 Question. 1 Given the relations employee (name, salary, deptno), and department (deptno, deptname, address)…

GATE CS Topic wise Questions Database www.gatehelp.com YEAR 2000 Question. 1 Given the relations employee (name, salary, deptno), and department (deptno, deptname, address)…