A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2006; you can also visit the original URL.
The file type is application/pdf.
Filters
Semantic Update Optimization in Active Databases
[chapter]
1997
IFIP Advances in Information and Communication Technology
Preserved Fulltext
In an active database, an update may be constrained by integrity constraints, and may also trigger rules that, in turn, may a ect the database state. ...
Thus, a user-speci ed update" is transformed, through semantic reformulation techniques, into a sequence of updates which together ensure semantic integrity of the original update as well as its propagated ...
Semantic query optimization YK93 is a particular case of semantic update optimization discussed in this paper. ...
doi:10.1007/978-0-387-34913-8_12
fatcat:qrqroqirnnewjicpwdi7mss2h4
Page 7888 of Mathematical Reviews Vol. , Issue 99k
[page]
1999
Mathematical Reviews
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
(1-UCSD; La Jolla, CA) Semantics and expressiveness issues in active databases. ...
Summary: “A formal framework is introduced for studying the semantics and expressiveness of active databases. ...
Monitoring Complex Rule Conditions
[chapter]
1999
Active Rules in Database Systems
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
With incremental evaluation the state of a rule condition is materialized and, after an update, the new state of the condition is defined incrementally in terms of differences to the materialized state ...
generated by the update. ...
In particular we discuss how well suited the various techniques are for monitoring rule conditions in active databases. ...
doi:10.1007/978-1-4419-8656-6_5
fatcat:5nwicrnx2zephgbl6k5cxjxdgi
Cooperative Database Caching within Cloud Environments
[chapter]
2012
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Semantic caching is a technique used for optimizing the evaluation of database queries by caching results of old queries and using them when answering new queries. ...
CoopSC is a cooperative database caching architecture, which extends the classic semantic caching approach by allowing clients to share their local caches in a cooperative matter. ...
An active database server component was developed in order to handle the execution of update, insert, and delete SQL statements using triggers. ...
doi:10.1007/978-3-642-30633-4_3
fatcat:efl7grozhbbg3ld6f5wgaggqzq
Analysis and optimization of active databases
2002
Data & Knowledge Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Rule semantics, con uence, equivalence and optimization are then formally investigated and characterized in a solid framework that naturally extends a known model for relational database transactions. ...
A user de ned transaction, which i s v i e w ed here as a sequence of atomic database updates forming a semantic unit, is translated by means of active rules into induced one(s). ...
s) otherwise: We are nally ready to de ne the semantics of a transaction with respect to an active database. ...
doi:10.1016/s0925-2312(01)00687-7
fatcat:ndhvgntsynduvnph3f7kc5x36m
Active-U-Datalog: Integrating active rules in a logical update language
[chapter]
1998
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2008; you can also visit the original URL.
The file type is application/pdf.
This need has led to the design of active databases, in which events of various kinds (e.g., a query, an update) may cause the firing of so-called active rules. ...
In a more advanced setting, one could ask that a semantic-aware database should be able to react correctly to changes to the data it contains, by accordingly updating other data, in order to maintain consistency ...
therefore in performing useful compile-time optimization. ...
doi:10.1007/bfb0055497
fatcat:ocesboh7ujbfjkvj7zrknhkmka
Database research at Arizona State University
1996
SIGMOD record
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
To avoid the costs of complete recomputation of the view in the updated database state, the materialized view can be updated incrementally using the update propagation approach provided by the PF algorithm ...
Active rules in CDOL are modeled as conditional term rewrite rules that rewrite the current database state. Rules communicate using messages that represent update requests and occurrences of events. ...
doi:10.1145/381854.381892
fatcat:bnelyai2lrh5jlypswa5grgh5a
Defining Abstract Semantics for Static Dependence Analysis of Relational Database Applications
[chapter]
2016
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
As database attributes differ from traditional imperative language variables, we define abstract semantics of database applications in relational abstract domain. ...
This allows to identify statically various parts of database information (in abstract form) possibly used or defined by database statements, leading to a more precise dependence analysis. ...
Some of the worth-mentioning software engineering activities where semantics-based dependences in database applications play crucial roles are program slicing, language-based information-flow analyses, ...
doi:10.1007/978-3-319-49806-5_8
fatcat:2axv2qcajjgovk3ct76m2n45sa
Page 5002 of Mathematical Reviews Vol. , Issue 96h
[page]
1996
Mathematical Reviews
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
and operational semantics of passive and active updates in logic databases. ...
“There are two kinds of atomic updates in PDDL, passive and active updates. ...
Active complex event processing
2010
Proceedings of the VLDB Endowment
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2010; you can also visit the original URL.
The file type is application/pdf.
Moreover we design an Active CEP infrastructure, that integrates the active rule component into the CEP kernel, allowing finegrained and optimized rule processing. ...
to perform hygiene precautions in real-time. ...
The processor in our system also handles CEP queries that integrate relational database lookup, typically access to the semantic repository. ...
doi:10.14778/1920841.1921034
fatcat:7opqsjapinaplkxcukqfskstui
Page 6174 of Mathematical Reviews Vol. , Issue 91K
[page]
1991
Mathematical Reviews
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
Current trends of active database research, features and implementation problems of such databases are discussed in this article. ...
Our results show that the expected behavior of MEDIAN is within 10% of optimal and is asymptotically optimal as n/m — oo or as n/m — 0.”
91k:68030 68P15
Bekich, Zoran
Active data bases: an analytic survey ...
The design and implementation of the Ariel active database rule system
1996
IEEE Transactions on Knowledge and Data Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Similar to System R and other relational database systems,Ariel has a front-end consisting of a lexer, parser, semantic analyzer, and query optimizer. ...
Transformation of databases from passive to active is a landmark in the evolution of DBMS technology. ...
doi:10.1109/69.485644
fatcat:bvwgaald4nekxpizqzpfytjhv4
SQOPI: Semantic Query Optimization Framework
2014
International Journal of Computer Applications
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Semantic query optimization uses semantic knowledge in databases to rewrite queries and logic programs for the purpose of more efficient query evaluation. ...
There has been a large body of work in the area of semantic query optimization. ...
In this environment, any query optimization that reduces disk activity is likely to be significant. Third, Distributed databases, where a single logical database comprises several geographically distant ...
doi:10.5120/16800-6516
fatcat:gis5ke73prdivnkb6cqnjoowxi
Analysis of Data Dependency Based Intrusion Detection System
[chapter]
2009
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
We developed a step by step approach that helps in determining the optimal configuration expressed by the response strategy and the threshold value. ...
This research focuses on analyzing the cost effectiveness of a database intrusion detection system that uses dependencies among data items to detect malicious transactions. ...
Acknowledgement This research has been supported in part by US AFOSR under grant FA 9550-04-1-0429 and the KY NSF EPSCoR program. We are thankful to Dr. Robert. L. ...
doi:10.1007/978-3-642-03007-9_8
fatcat:zsqdwiubxzh5jg543vi65u6tb4
Image Retrieval using Long-Term Semantic Learning
2006
2006 International Conference on Image Processing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2013; you can also visit the original URL.
The file type is application/pdf.
We introduce in this paper a supervised optimization of a set of feature vectors. ...
Experiments have been carried out on a large generalist database in order to validate our approach. ...
We recently proposed a kernel matrix updating method, to exploit semantic labels for generalist database management [10] . ...
doi:10.1109/icip.2006.313127
dblp:conf/icip/CordG06
fatcat:5zlbqiyjd5d6hixtzzhh3yydba
« Previous
Showing results 1 — 15 out of 53,169 results