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VLDB
2004
ACM
99views Database» more  VLDB 2004»
13 years 10 months ago
Query Languages and Data Models for Database Sequences and Data Streams
We study the fundamental limitations of relational algebra (RA) and SQL in supporting sequence and stream queries, and present effective query language and data model enrichments ...
Yan-Nei Law, Haixun Wang, Carlo Zaniolo
ICEBE
2005
IEEE
168views Business» more  ICEBE 2005»
13 years 11 months ago
Frequency Operators for Condensative Queries over Data Streams
Over a traditional Database Management System (DBMS), the answer to an aggregate query is usually much smaller than the answer to a similar nonaggregate query. Therefore, we call ...
Lisha Ma, Werner Nutt
PODS
2002
ACM
136views Database» more  PODS 2002»
14 years 5 months ago
Models and Issues in Data Stream Systems
In this overview paper we motivate the need for and research issues arising from a new model of data processing. In this model, data does not take the form of persistent relations...
Brian Babcock, Shivnath Babu, Mayur Datar, Rajeev ...
ADC
2007
Springer
100views Database» more  ADC 2007»
13 years 11 months ago
Condensative Stream Query Language for Data Streams
Lisha Ma, Werner Nutt, Hamish Taylor
DBPL
2007
Springer
102views Database» more  DBPL 2007»
13 years 11 months ago
A Theory of Stream Queries
Data streams are modeled as infinite or finite sequences of data elements coming from an arbitrary but fixed universe. The universe can have various built-in functions and predi...
Yuri Gurevich, Dirk Leinders, Jan Van den Bussche