NDLI: An indexing model for structured documents to support queries on content, structure and attributes

Content Provider	IEEE Xplore Digital Library
Author	Tuong Dao
Copyright Year	1998
Description	Author affiliation: Dept. of Comput. Sci., R. Melbourne Inst. of Technol., Vic., Australia (Tuong Dao)
Abstract	The complex internal structure of documents can be described and captured by documentation representation standards such as SGML and SGML related standards like HTML and XML. The hierarchical structure of documents and the attributes of documents as well as attributes of document components at all levels of the document hierarchy can be encoded with markup tags. In traditional text database systems, only queries on content are supported. The rich structural information contained in documents and the attributes of document components are not captured in these systems, and queries on structure and attributes are not supported. We propose a text model, a query language and an indexing scheme which can support queries on content, structure, and attributes of documents as well as attributes of text elements within documents. This model is schema-independent, and query evaluation time is at worst linear. We show that our indexing scheme can efficiently support a wide range of queries in a database for highly heterogeneous collections of structured documents. We provide query examples to show how all the information encoded in documents marked up according to the TEI Guidelines, an encoding standard adopted by the humanities disciplines, can be indexed and queried in our indexing model.
Starting Page	88
Ending Page	97
File Size	223523
Page Count	10
File Format	PDF
ISBN	081868464X
ISSN	10929959
DOI	10.1109/ADL.1998.670383
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-04-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Indexing SGML Documentation HTML XML Database systems Database languages Query processing Guidelines Encoding
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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