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Title:
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SPATIAL EXTENSIONS TO QUERY-BY-EXAMPLE FOR GEOGRAPHIC INFORMATION SYSTEM QUERIES |
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Author(s):
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Shapiee Abd Rahman , Subhash Bhalla |
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ISBN:
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972-8924-16-X |
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Editors:
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Pedro Isaías, Maggie McPherson and Frank Bannister |
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Year:
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2006 |
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Edition:
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2 |
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Keywords:
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Geographic information system, High-level user interface, QBE, Spatial data query. |
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Type:
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Poster/Demonstration |
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First Page:
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370 |
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Last Page:
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372 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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Spatial data is used in many applications such as land management, urban planning, tourism, vehicle guidance and
navigation, and e-commerce. Many such applications have recently migrated towards citizen-oriented applications. These
applications require a definition of simple and user-friendly interfaces to allow users to pose ad-hoc queries. Earlier,
Query-By-Example (QBE) is a user-friendly language developed for a RDBMS. Recently, many RDBMSs have
included support for spatial data extensions. This paper presents an effort to create the essential extensions for QBE to
support spatial queries. It is named as Spatial QBE. We show that Spatial QBE is a simple and user-friendly interface
which can cater to both spatial and common queries. The main strengths of this interface are its simplicity to express a
query and its expressive power for spatial queries. |
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