Broadening Access to Large Online Databases by Generalizing Query Previews
نویسندگان
چکیده
heterogeneous and dynamic problems of engineering technology and systems for industry and government. ISR is a permanent institute of the University of Maryland, within the Glenn L. Martin Institute of Technology/A. James Clark School of Engineering. It is a National Science Foundation Engineering Research Center. Web site http://www.isr.umd.edu I R INSTITUTE FOR SYSTEMS RESEARCH TECHNICAL RESEARCH REPORT
منابع مشابه
Data Using Generalized Query Previews
Companies, government agencies, and other organizations are making their data available to the world over the Internet. These organizations store their data in large tables. These tables are usually kept in relational databases. Online access to such databases is common. Users query these databases with different front-ends. These front-ends use command languages, menus, or form fillin interfac...
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Companies, government agencies, and other types of organizations are making their large data available to the world over the Internet. Current front-ends rarely give users information about the contents of the data. This leads many users to waste time and network resources posing queries that have either zero-hit or mega-hit result sets. Query previews form a novel visual approach for browsing ...
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Companies, government agencies, and other organizations are making their data available to the world over the Internet. They often use large online relational tables for this purpose. Users query such tables with front-ends that typically use menus or form fillin interfaces, but these interfaces rarely give users information about the contents and distribution of the data. Such a situation lead...
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Networked and local data exploration systems that use command languages, menus, or form ® ll-in interfaces rarely give users an indication of the distribution of data. This often leads users to waste time, posing queries that have zero-hit or mega-hit results. Query previews are a novel visual approach for browsing databases. Query previews supply users with data distribution information for se...
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