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
Citations
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Xeek: An Efficient Method for Supporting XPath Evaluation with Relational Databases.
TL;DR: Xeek stores some redundant structural information which can be used speed up XPath evaluation even when a large set of context nodes is used, to select a set of inner nodes to act as proxy nodes and store the ancestor information only for the proxies.
Patent
Evaluating xml full text search
TL;DR: In this paper, the posting lists for tokens in XML documents are stored and used to process queries, and for each occurrence of a token in the XML documents, a document processor adds an entry to a list for the token, which maps the token to documents or nodes within the documents where the tokens can be found.
Book ChapterDOI
Design of Semi-Structured Database System: Conceptual Model to Logical Representation
TL;DR: The chapter focuses on a graph – semantic based conceptual data model for semi-structured data, called Graph Object Oriented Semi-Structured Data Model (GOOSSDM), to conceptualize the different facets of such system in object oriented paradigm.
Journal ArticleDOI
Techniques for the evaluation of XML queries: a survey
Tae-Sun Chung,Hyoung-Joo Kim +1 more
TL;DR: This paper surveys the state of the art on the problem of XML query evaluation in three dimensions: XML instance storage, XML query languages and XML views, and XML query language processing.
Proceedings ArticleDOI
Monitoring Web information changes
TL;DR: A system called CDWeb is presented that allows users to monitor a whole document or specific portions of it, and provides a flexible and adaptive view of the Web in order to associate a personalized view to each user.
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.