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A Review of Star Schema and Snowflakes Schema
2020In the new age, digital data is the most important source of acquiring knowledge. For this purpose, collect data from various sources like websites, blogs, webpages, and most important databases. Database and relational databases both provide help to decision making in the future work.
M. Zafar Iqbal +5 more
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International Journal of Computer Vision, 1989
THE SCHEMA SYSTEM EMBODIES A KNOWLEDGE-BASED APPROACH TO SCENE INTERPRE- TATION. LOW-LEVEL ROUTINES ARE APPLIED TO EXTRACT IMAGE DESCRIPTORS CALLED TOKENS, AND THESE TOKENS ARE FURTHER ORGANIZED BY INTERMEDIATE-LEVEL ROUT- INES INTO MORE ABSTRACT STRUCTURES THAT CAN BE ASSOCIATED WITH OBJECT INST- ANCES.
Bruce A. Draper +4 more
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THE SCHEMA SYSTEM EMBODIES A KNOWLEDGE-BASED APPROACH TO SCENE INTERPRE- TATION. LOW-LEVEL ROUTINES ARE APPLIED TO EXTRACT IMAGE DESCRIPTORS CALLED TOKENS, AND THESE TOKENS ARE FURTHER ORGANIZED BY INTERMEDIATE-LEVEL ROUT- INES INTO MORE ABSTRACT STRUCTURES THAT CAN BE ASSOCIATED WITH OBJECT INST- ANCES.
Bruce A. Draper +4 more
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Mapping XML-Schema to Relational Schema
2002XML is fast emerging as the dominant standard for representing data in Internet. One efficient path to store it is transforming XML data into relational database. Exiting XML-to-RDB algorithms focus only on the structure and ignore semantic constrains, in addition, their inputting is not XML-Schema but DTD.
Hongwei Sun +3 more
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Proceedings of the 19th ACM international conference on Information and knowledge management, 2010
Understanding the schema of a complex database is a crucial step in exploratory data analysis. However, gaining such an understanding is challenging for new users for many reasons. First, complex databases often have thousands of inter-linked tables, with little indication of the important tables or the main concepts in the database schema.
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Understanding the schema of a complex database is a crucial step in exploratory data analysis. However, gaining such an understanding is challenging for new users for many reasons. First, complex databases often have thousands of inter-linked tables, with little indication of the important tables or the main concepts in the database schema.
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Semantic schema refinements for multilevel schema integration
Data & Knowledge Engineering, 1998Summary: Within the database field, schema refinements have been proved useful for documentation and maintenance purposes; moreover, schemata describing the reality of interest at different levels of abstraction are extensively used in computer aided software engineering tools and visual query languages.
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Proceedings of the ninth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, 1990
The concept of method schemas is proposed as a simple model for object-oriented programming with features such as classes with methods and inheritance, method name overloading, and late binding. An important issue is to check whether a given method schema can possibly lead to inconsistencies in some interpretations.
Serge Abiteboul +2 more
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The concept of method schemas is proposed as a simple model for object-oriented programming with features such as classes with methods and inheritance, method name overloading, and late binding. An important issue is to check whether a given method schema can possibly lead to inconsistencies in some interpretations.
Serge Abiteboul +2 more
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2017
This chapter describes the underlying principles for Schema Therapy (ST) and its forensic adaptation, and illustrates the forensic model with a case example. It presents the current status of the evidence of ST in forensic settings and make suggestions for future research on ST. ST combines different elements from various therapeutic approaches.
Keulen- de Vos, Marije +1 more
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This chapter describes the underlying principles for Schema Therapy (ST) and its forensic adaptation, and illustrates the forensic model with a case example. It presents the current status of the evidence of ST in forensic settings and make suggestions for future research on ST. ST combines different elements from various therapeutic approaches.
Keulen- de Vos, Marije +1 more
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Form invariance of schema and exact schema theorem
Science in China Series F, 2003One of the most important research questions in GAs is the explanation of the evolutionary process of GAs as a mathematical object. In this paper, we use matrix linear transformations to do it, first. This new method makes the study on mechanism of GAs simpler. We obtain the conditions under which the operators of crossover and mutation are commutative
Haijun Yang, Minqiang Li
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External schemas in a schema-evolution environment for OODBs
Database and Expert Systems Applications. 8th International Conference, DEXA '97. Proceedings, 2002External schemas are derived from the database conceptual schema; they can be used to simulate changes in it. Sometimes the final users' information requirements change: they need new information which cannot be derived from the information in the database.
José Samos, Fèlix Saltor
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Schema Mediation for Heterogeneous XML Schema Sources
2009 International Conference on Advanced Information Networking and Applications Workshops, 2009Due to the increasingly widespread use of XML, many XML-related applications require the service of schema mediation, which is to find semantically similar elements from two or more schema sources. Current approaches to schema mediation require much improvement.
Hong-Quang Nguyen +3 more
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