词汇 | example_english_database-schema |
释义 | database schemacollocation in Englishmeanings of databaseand schemaThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with database or schema. database noun[C] uk /ˈdeɪ.tə.beɪs/ us /ˈdeɪ.t̬ə.beɪs/ a large amount of information stored in a computer system in such a way that it can be easily looked at ... See more at database schema noun[C] uk /ˈskiː.mə/ us /ˈskiː.mə/ a drawing that represents an idea or theory and makes it easier ... See more at schema Examples of database schemaThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. We may think of a type graph as a conceptual databaseschema, while an instance graph represents a particular state of the database. Figure 7 shows the databaseschema to which the above two examples refer. However, techniques that have been used for databaseschema matching or integration might be of interest to ontology mapping practitioners. We start by discussing the relation of ontology mapping and databaseschema integration. Finally, we sketch how the event rules could be used to solve general abductive problems in addition to databaseschema validation and update processing problems. In this paper, we show that databaseschema validation and update processing problems can be classified as either of deductive or of abductive nature. In this way, we show that these procedures can deal with all databaseschema validation and update processing problems considered in this paper. In its original formulation, two predicates will unify whenever they are not disjoint in the databaseschema. It also provides a description of how to transform these models into a databaseschema. Current practice in ontology mapping entails a large number of fields ranging from machine learning, concept lattices and formal theories to heuristics, databaseschema and linguistics. In this way, we show that these procedures can be used to deal with all databaseschema validation and update processing problems considered in this paper. A stereotype is a generalization of a number of concepts in computing including relational database schema, templates in information extraction, and frames in knowledge based systems. In fact, constraints represent a natural way to extend database semantics, by explicitly defining properties which are supposed to be satisfied by all instances over a given databaseschema. Up to now, the general approach of the research related to databaseschema validation and update processing has been to provide specific methods for solving particular problems. The information source context is a direct translation of a databaseschema into logic without resolving semantic con-icts, so that the translation can be done automatically. Databaseschema matching or integration is regarded by many practitioners as similar to ontology mapping. We are not going to analyse arguments in favour of or against the issue of whether a database schema is an ontology, as this is peripheral to our discussion. Databaseschema validation has become an important problem in database engineering, particularly since databases are able to define intentional information. Moreover, we have sketched how the event rules could be used to solve general abductive problems in addition to databaseschema validation and update processing problems. Internally, it discovers the databaseschema by using the database metadata. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of database Go to the definition of schema See other collocations with database See other collocations with schema |
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