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
Query mapping techniques for XML documents: A comparative study
Amjad Qtaish,Kamsuriah Ahmad +1 more
TL;DR: Various query mapping techniques are compared in terms of their advantages and limitations, focusing on the complexity of translated SQL and query response time, which affect the efficiency of the XML query processing.
Dissertation
Structural Summaries as a Core Technology for Efficient XML Retrieval
TL;DR: This work presents new structural summaries that enable highly efficient and scalable XML retrieval in native, relational and hybrid systems and introduces BIRD, a very efficient and expressive labelling scheme for XML, and the CADG, a combined text and structure index, and combines them as two complementary building blocks of the same XML retrieval system.
Content-Aware DataGuides for Indexing Large Collections of XML Documents
TL;DR: It is shown that retrieval in XML documents can be accelerated significantly by processing text and structure simultaneously during all retrieval phases, and the Content-Aware DataGuide (CADG) is enhanced with simultaneous keyword and path matching and a precomputed content/structure join.
Journal ArticleDOI
Holistically Stream-based Processing Xtwig Queries
Guoren Wang,Bo Ning,Ge Yu +2 more
TL;DR: A holistic stream-based algorithm XtwigStack is proposed forXtwig queries, and experiments show that XtwIGStack is much more efficient than the transformation method.
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.