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Technical Comparison of Oracle Database 10g and SQL Server 2005
Technical Comparison of Oracle Database 10g and SQL Server 2005

... A further difference between Oracle and SQL Server is in their management model. Oracle Enterprise Manager follows the management-by-exception model, where DBA intervention is only needed when an exception condition occurs or is about to occur. Oracle highlights problem areas on its Home page such a ...
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Entity–attribute–value model

Entity–attribute–value model (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In mathematics, this model is known as a sparse matrix. EAV is also known as object–attribute–value model, vertical database model and open schema.
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