Journal ArticleDOI
Lore: a database management system for semistructured data
Jason G. McHugh,Serge Abiteboul,Roy Goldman,Dallas Quass,Jennifer Widom +4 more
- Vol. 26, Iss: 3, pp 54-66
Reads0
Chats0
TLDR
This paper provides an overview of these aspects of the Lore system, as well as other novel features such as dynamic structural summaries and seamless access to data from external sources.Abstract:
Lore (for Lightweight Object Repository) is a DBMS designed specifically for managing semistructured information. Implementing Lore has required rethinking all aspects of a DBMS, including storage management, indexing, query processing and optimization, and user interfaces. This paper provides an overview of these aspects of the Lore system, as well as other novel features such as dynamic structural summaries and seamless access to data from external sources.read more
Citations
More filters
Dissertation
Challenging the Invisible Web
TL;DR: The experiments show that an information integration system with an adaptive, dynamically generated user interface, coordinating the constraints among the heterogeneous sources, will greatly improve the effectiveness of integrated information searching, and will utilize the query capabilities of sources as far as possible.
Dissertation
Une approche matérialisée basée sur les vues pour l'intégration de documents XML
TL;DR: L'objectif de notre travail est l'integration de donnees XML en utilisant les principes d'Osiris, un prototype de SGBD-BC, dont le concept central est celui de vue.
Book ChapterDOI
A Levelized Schema Extraction for XML Document Using User-Defined Graphs
Sungrim Kim,Yongik Yoon +1 more
TL;DR: The way to extract schema using some graphs according to the frequency of element occurrence in XML documents is suggested, and results show that the method is a desirable extracting schema for XML documents.
Book ChapterDOI
Retrieval of semistructured Web data
TL;DR: It is shown how a generalization of FT≤ combined with path constraints allows one to formally represent, state constraints, and reason about semistructured data, and a logical semantics for the constraints is established thanks to axiom schemes presenting the first-order theory constraint system.
Dissertation
An efficient multi join query optimization for relational database management system using swarm intelligence approaches
Zager Al Saedi,Ahmed Khalaf +1 more
TL;DR: Experimental results demonstrate that the performance of TPABC, when compared to PSO, ACO, and native technique in the context of computational time, is very promising, which is indicative of the fact that the TPA BC algorithm is capable of solving MJQO problems in shorter amounts of time and at lower costs compared to other approaches.
References
More filters
Journal ArticleDOI
Federated database systems for managing distributed, heterogeneous, and autonomous databases
Amit P. Sheth,James A. Larson +1 more
TL;DR: In this paper, the authors define a reference architecture for distributed database management systems from system and schema viewpoints and show how various FDBS architectures can be developed, and define a methodology for developing one of the popular architectures of an FDBS.
Journal ArticleDOI
Query evaluation techniques for large databases
TL;DR: This survey describes a wide array of practical query evaluation techniques for both relational and postrelational database systems, including iterative execution of complex query evaluation plans, the duality of sort- and hash-based set-matching algorithms, types of parallel query execution and their implementation, and special operators for emerging database application domains.
Proceedings Article
DataGuides: Enabling Query Formulation and Optimization in Semistructured Databases
Roy Goldman,Jennifer Widom +1 more
TL;DR: The theoretical foundations of DataGuides are presented along with an algorithm for their creation and an overview of incremental maintenance, and performance results based on the implementation of dataGuides in the Lore DBMS for semistructured data are provided.
Journal ArticleDOI
The Lorel Query Language for Semistructured Data
TL;DR: The main novelties of the Lorel language are the extensive use of coercion to relieve the user from the strict typing of OQL, which is inappropriate for semistructured data; and powerful path expressions, which permit a flexible form of declarative navigational access and are particularly suitable when the details of the structure are not known to the user.
Book
The object database standard: ODMG 2.0
R. G. G. Cattell,Douglas K. Barry,Dirk Bartels,Mark Berler,Jeff Eastman,Sophie Gamerman,David Jordan,Adam Springer,Henry Strickland,Drew Wade +9 more
TL;DR: With this book, standards are defined for object management systems and this will be the foundational book for object-oriented database product.