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SIGMOD
2006
ACM
129views Database» more  SIGMOD 2006»
16 years 7 months ago
Recovery from "bad" user transactions
User written transaction code is responsible for the "C" in ACID transactions, i.e., taking the database from one consistent state to the next. However, user transaction...
David B. Lomet, Zografoula Vagena, Roger S. Barga
SIGMOD
2003
ACM
141views Database» more  SIGMOD 2003»
16 years 7 months ago
QC-Trees: An Efficient Summary Structure for Semantic OLAP
Recently, a technique called quotient cube was proposed as a summary structure for a data cube that preserves its semantics, with applications for online exploration and visualiza...
Laks V. S. Lakshmanan, Jian Pei, Yan Zhao
PODS
2003
ACM
116views Database» more  PODS 2003»
16 years 7 months ago
On nearest neighbor indexing of nonlinear trajectories
In recent years, the problem of indexing mobile objects has assumed great importance because of its relevance to a wide variety of applications. Most previous results in this area...
Charu C. Aggarwal, Dakshi Agrawal
PODS
2003
ACM
158views Database» more  PODS 2003»
16 years 7 months ago
Computing full disjunctions
Full disjunctions are an associative extension of the outerjoin operator to an arbitrary number of relations. Their main advantage is the ability to maximally combine data from di...
Yaron Kanza, Yehoshua Sagiv
PODS
2005
ACM
131views Database» more  PODS 2005»
16 years 7 months ago
Buffering in query evaluation over XML streams
All known algorithms for evaluating advanced XPath queries (e.g., ones with predicates or with closure axes) on XML streams employ buffers to temporarily store fragments of the do...
Ziv Bar-Yossef, Marcus Fontoura, Vanja Josifovski