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mobile computing
(72039 results)-
White Papers
Eliminating Impedance Mismatch in C++
September 28, 2007 12:00am PDT
Recently, the C# and the VISUAL BASIC communities were tantalized by the advent of LINQ- the Language INtegrated Query technology from Microsoft. LINQ represents a set of language extensions...
Provided by: Association for Computing Machinery
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White Papers
Large Scale P2P Distribution of OpenSource Software
September 28, 2007 12:00am PDT
Open-source software communities currently face an increasing complexity in managing and distributing software con-tent among their developers and contributors. This is mainly due to the...
Provided by: Association for Computing Machinery
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White Papers
P2P Authority Analysis for Social Communities
September 28, 2007 12:00am PDT
PageRank-style authority analyses of Web graphs are of great importance for Web mining. Such authority analyses also apply to hot "Web 2.0" applications that exhibit a natural graph structure,...
Provided by: Association for Computing Machinery
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White Papers
SOR: A Practical System for Ontology Storage, Reasoning and Search
September 28, 2007 12:00am PDT
Ontology, an explicit specification of shared conceptualization, has been increasingly used to define formal data semantics and improve data reusability and interoperability in enterprise...
Provided by: Association for Computing Machinery
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White Papers
Query Language Support for Incomplete Information in the MayBMS System
September 28, 2007 12:00am PDT
MayBMS is a data management system for in-complete information developed at Saarland University. Its main features are a simple and compact representation system for incomplete information and a...
Provided by: Association for Computing Machinery
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White Papers
A Simple and Efficient Estimation Method for Stream Expression Cardinalities
September 28, 2007 12:00am PDT
A top-k query retrieves the k highest scoring tuples from a data set with respect to a scoring function defined on the attributes of a tuple. The efficient evaluation of top-k queries has been an...
Provided by: Association for Computing Machinery
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White Papers
Tracing Lineage Beyond Relational Operators
September 28, 2007 12:00am PDT
Tracing the lineage of data is an important requirement for establishing the quality and validity of data. Recently, the problem of data provenance has been increasingly addressed in database...
Provided by: Association for Computing Machinery
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White Papers
Adhoc Top-k Query Answering for Data Streams
September 28, 2007 12:00am PDT
A top-k query retrieves the k highest scoring tuples from a data set with respect to a scoring function defined on the attributes of a tuple. The efficient evaluation of top-k queries has been an...
Provided by: Association for Computing Machinery
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White Papers
A Generic Solution for Warehousing Business Process Data
September 28, 2007 12:00am PDT
Improving business processes is critical to any corporation. Process improvement requires analysis as its first basic step. Process analysis has many unique challenges: Companies execute many...
Provided by: Association for Computing Machinery
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White Papers
Why You Should Run TPC-DS:A Workload Analysis
September 28, 2007 12:00am PDT
The Transaction Processing Performance Council (TPC) is completing development of TPC-DS, a new generation industry standard decision support benchmark. The TPC-DS benchmark, first introduced in...
Provided by: Association for Computing Machinery
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White Papers
Lazy Maintenance of Materialized Views
September 28, 2007 12:00am PDT
Materialized views can speed up query processing greatly but they have to be kept up to date to be useful. Today, database systems typically maintain views eagerly in the same transaction as the...
Provided by: Association for Computing Machinery
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White Papers
RadixZip: Linear Time Compression of Token Streams
September 28, 2007 12:00am PDT
RadixZip is a block compression technique for token streams. It introduces RadixZip Transform, a linear time algorithm that rearranges bytes using a technique inspired by radix sorting. For...
Provided by: Association for Computing Machinery
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White Papers
Continuous Queries in Oracle
September 28, 2007 12:00am PDT
This paper describes Continuous Queries (CQ) in Oracle RDBMS, a feature that incorporates stream and complex event processing into an RDBMS, the first such attempt in commercial databases. The...
Provided by: Association for Computing Machinery
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White Papers
Efficient Bulk Deletes for Multi Dimensional Clustered Tables in DB2
September 28, 2007 12:00am PDT
In data warehousing applications, the ability to efficiently delete large chunks of data from a table is very important. This feature is also known as Rollout or Bulk Deletes. Rollout is generally...
Provided by: Association for Computing Machinery
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White Papers
Supporting Time-Constrained SQL Queries in Oracle
September 28, 2007 12:00am PDT
The growing nature of databases, and the flexibility inherent in the SQL query language that allows arbitrarily complex formulations, can result in queries that take inordinate amount of time to...
Provided by: Association for Computing Machinery
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White Papers
Inverse Functions in the AquaLogic Data Services Platform
September 28, 2007 12:00am PDT
When integrating data from heterogeneous sources, it is often necessary to transform both the schemas and the data from the underlying sources in order to present the integrated data in the form...
Provided by: Association for Computing Machinery
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White Papers
A Genetic Approach for Random Testing of Database Systems
September 28, 2007 12:00am PDT
Testing a database engine has been and continues to be a challenging task. The space of possible SQL queries along with their possible access paths is practically unbounded. Moreover, this space...
Provided by: Association for Computing Machinery
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White Papers
Automating the Detection of Snapshot Isolation Anomalies
September 28, 2007 12:00am PDT
Snapshot Isolation (SI) provides significantly improved concurrency over 2PL, allowing reads to be non-blocking. Unfortunately, it can also lead to non-serializable executions in general. Despite...
Provided by: Association for Computing Machinery
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White Papers
CellSort: High Performance Sorting on the Cell Processor
September 28, 2007 12:00am PDT
In this paper the authors describe the design and implementation of CellSort a high performance distributed sort algorithm for the Cell processor. They design CellSort as a distributed bitonic...
Provided by: Association for Computing Machinery
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White Papers
Increasing Buffer-Locality for Multiple Index Based Scans Through Intelligent Placement and Index Scan Speed Control
September 28, 2007 12:00am PDT
Decision support systems are characterized by large concurrent scan operations. A significant percentage of these scans are executed as index based scans of the data. This is especially true when...
Provided by: Association for Computing Machinery
