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On the Selection of an Optimal Set of Indexes
TLDR
In this paper, a probabilistic model of transactions (queries, updates, insertions, and deletions) to a file is presented and an algorithm that obtains a near optimal solution to the index selection problem in polynomial time is developed. Expand
A study on fuzzy intrusion detection
TLDR
A dynamic approach that tries to discover known or unknown intrusion patterns is proposed and a dynamic fuzzy boundary is developed from labelled data for different levels of security needs. Expand
Structure-Based Queries over the World Wide Web
TLDR
A novel query language, NetQL and its implementation, for accessing the World Wide Web, designed for local structure-based queries, which exploits the topology of web pages given by hyperlinks, but also supports queries involving information inside pages. Expand
Interactions between Dependencies and Nested Relational Structures
TLDR
This paper describes how nesting preserves, alters, or destroys dependencies holding in a first-normal-form relation, and considers dependencies which hold in each block of the horizontally decomposed relation induced by nesting. Expand
An overview of GOOD
TLDR
The main thrust behind the project is to indicate general concepts that are fundamental to any graph-oriented database user-interface, and the idea of graph-pattern matching as a uniform object manipulation primitive offers a uniform framework in which this can be accomplished. Expand
Concepts for Modeling and Querying List-Structured Data
TLDR
This article presents the list-structure data model which has ordering as a fundamental feature and is based on atomic, aggregate, and list constructors and thus provides support for tree-structured and sequential representations of data. Expand
Structural Recursion as a Query Language on Lists and Ordered Trees
TLDR
It is shown that the combination of vertical recursion down a tree combined with horizontal recursion across a list of trees gives rise to a robust class of transformations: it captures the class of all primitive recursive queries. Expand
Throughput Concavity and Response Time Convexity
TLDR
On souligne des preuves formelles de la concavite de rendement and de the convexite du temps de reponse dans des rapports techniques. Expand
Design of an Integrated Information Retrieval/Database Management System
TLDR
A novel, unified architecture is presented which provides the flexibility of integrating any information retrieval model with any type of database management system, and provides for the ability to use 'aggregation' and 'generalization' operations automatically to provide more meaningful responses. Expand
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