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
Proceedings ArticleDOI
QED: a novel quaternary encoding to completely avoid re-labeling in XML updates
Changqing Li,Tok Wang Ling +1 more
TL;DR: This paper proposes a novel quaternary encoding approach for the labeling schemes, which works much better than the existing labeling schemes on the label updates when considering either the number of nodes or the time for re-labeling.
Patent
Method for conducting a search on a network which includes documents having a plurality of tags
TL;DR: In this article, a method and system for conducting a search on a network is disclosed, which comprises identifying at least one of the plurality of tags, receiving a query, parsing the query, and matching the parsed query with at least 1/5 of the tags of the at least 5/5 plurality of documents.
Proceedings ArticleDOI
Structured information retrieval in XML documents
TL;DR: This paper examines an XML collection from the viewpoint of Information Retrieval (IR) and views the XML documents as a collection of text documents with additional tags and attempts to adapt existing IR techniques to achieve more sophisticated search on XML documents.
Journal ArticleDOI
Managing historical semistructured data
TL;DR: A model for representing changes in semistructured data and a language for querying over these changes are presented and an important feature of this approach is that it represents and query changes directly as annotations on the affected data, instead of indirectly as the difference between database states.
Book ChapterDOI
Ozone: Integrating Structured and Semistructured Data
TL;DR: The structured object database model ODMG is extended with the ability to handle semistructured data based on the OEM model and Lorel language, and the extensions are implemented in a system called Ozone, which enhances both ODMG/OQL and OEM/Lorel by virtue of their combination.
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.