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
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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
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Proceedings ArticleDOI
An object oriented data model for Web and its algebra
Dell Zhang,Yisheng Dong +1 more
TL;DR: A new object oriented data model named XOM is proposed in this paper as the common data model for the Web data source, based on rooted connected directed graph both cyclic and acyclic, which can describe the aggregation relationship as well as the general reference relationship between XML elements.
Journal ArticleDOI
Modeling views in the layered view model for XML using UML
TL;DR: A Layered View Model (LVM) for XML with conceptual and schemata extensions is proposed, allowing analysis and design of views to be separated from their implementation, and a view transformation methodology for XML views in the LVM is defined.
Proceedings Article
Designing Good Semi-Structured Databases and Conceptual Modeling
TL;DR: In this paper, the authors define a semi-structured schema graph and identify the various anomalies that may occur in the graph, and propose two approaches to design S3-NF database, namely, restructuring by decomposition and the ER approach.
Journal ArticleDOI
Grammars++ for modelling information in text
Airi Salminen,Frank Wm. Tompa +1 more
TL;DR: Grammars provide a convenient means to describe the set of valid instances in a text database and can be used to specify database manipulation, including query, update, view definition, and index specification.
Multidimensional Mapping and Indexing of XML.
TL;DR: The measurements show that projection and selection are orthogonal and require special multidimensional index support to be processed efficiently and are identified to be fundamental parts of a typical query on XML documents.
References
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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.