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作者:Bo Qiao , Kui Fang , Yiming Chen ...
来源:[J].Cluster Computing(IF 0.776), 2017, Vol.20 (1), pp.81-91
摘要:... With the help of agricultural experts, this paper based on the Agricultural Thesaurus, determines the rules for judging whether a thesaurus is a concept or an entity, establishes maps from Agricultural Thesaurus to the agricultural knowledge graph schema layer and the data layer...
作者:Hasan Davulcu , Juliana Freire , Michael Kifer ...
来源:[J].ACM SIGMOD Record(IF 0.462), 1999, Vol.28 (2), pp.491-502
摘要:... The lowest layer, virtual physical layer , provides navigation independence by shielding the user from the complexities associated with retrieving data from raw Web sources. Next, the traditional logical layer supports site independence . The top layer is analogous to the...
作者:Beyers, Hector Q. , Oliviery, Martin S. , Hancke, Gerhard P.
来源:[J].South African Computer Journal, 2014, Vol.55, pp.1-11
摘要:The application schema layer of a Database Management System (DBMS) can be modified to produce results that do not reflect the data actually stored in the database. For example, table structures may be corrupted by changing the metadata of a database, or operators of the database...
作者:Mohand-Saïd Hacid
来源:[J].Journal of Intelligent Information Systems(IF 0.833), 2000, Vol.14 (2-3), pp.131-154
摘要:... To represent the various aspects of an image object's characteristics, we propose a model which consists of three layers: (1) Feature & Content Layer, intended to contain image visual features such as contours, shapes, etc.; (2) Object Layer, which provides the (conceptual) c...
作者:Elisa Bertino , Ahmed K. Elmagarmid , Mohand-Saïd Hacid
来源:[J].Journal of Intelligent Information Systems(IF 0.833), 2002, Vol.19 (3), pp.319-341
摘要:... 1 We propose a model which consists of three layers: (1) Shape Layer, which provides the geometric shapes of image objects; (2) Object Layer, intended to contain objects of interest and their description; and (3) Schema Layer, which contains the structured abstractions of obj...
作者:Anindita Sarkar Mondal , Sarmistha Neogy , Nandini Mukherjee ...
来源:[J].Innovations in Systems and Software Engineering: A NASA Journal, 2020, Vol.16 (2), pp.63-77
摘要:... In a previous paper, a basic architecture of an object-based schema oriented data storage system has been proposed which stores data in an encapsulated way. The system comprises account layer, container layer, object layer, database layer and schema layer. In this paper, the ...
作者:Hasan Davulcu , Juliana Freire , Michael Kifer ...
来源:[C].Management of data1999
摘要:... The lowest layer, virtual physical layer , provides navigation independence by shielding the user from the complexities associated with retrieving data from raw Web sources. Next, the traditional logical layer supports site independence . The top layer is analogous to the...

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