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...tagged value is rendered as a string enclosed by brackets and placed below the name of another element. A constraint 4 can be attached to any model element to refine its semantics. As it is stated in =-=[16]-=-, A constraint is a restriction on one or more values of (part of) an objectoriented model or system. In the UML, a constraint is rendered as a string between a pair of braces ({ }) and placed near ...

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...tandard conceptual model for MD modeling. Due to space constraints, we refer the reader to [1] for a detailed comparison and discussion about most of these models. The Unified Modeling Language (UML) =-=[3, 10]-=- has become the de facto standard for modeling systems (and not just software) using object-oriented concepts. UML is an extensible language, in the sense it provides mechanisms (stereotypes, tagged v...

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...whereas a dimension represents the context for analyzing a fact (product, customer, time, etc.). Various approaches for the conceptual design of MD systems have been proposed in the last few years [6]=-=[13]-=-[15][14] to represent main MD structural and dynamic properties. However, none of them has been widely accepted as a standard conceptual model for MD modeling. Due to space constraints, we refer the r...

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...eas a dimension represents the context for analyzing a fact (product, customer, time, etc.). Various approaches for the conceptual design of MD systems have been proposed in the last few years [6][13]=-=[15]-=-[14] to represent main MD structural and dynamic properties. However, none of them has been widely accepted as a standard conceptual model for MD modeling. Due to space constraints, we refer the reade...

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...), whereas a dimension represents the context for analyzing a fact (product, customer, time, etc.). Various approaches for the conceptual design of MD systems have been proposed in the last few years =-=[6]-=-[13][15][14] to represent main MD structural and dynamic properties. However, none of them has been widely accepted as a standard conceptual model for MD modeling. Due to space constraints, we refer t...

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...a dimension represents the context for analyzing a fact (product, customer, time, etc.). Various approaches for the conceptual design of MD systems have been proposed in the last few years [6][13][15]=-=[14]-=- to represent main MD structural and dynamic properties. However, none of them has been widely accepted as a standard conceptual model for MD modeling. Due to space constraints, we refer the reader to...

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...O approach also allows us to define identifying attributes in the fact class, if convenient, by placing the constraint {OID} next to a measure name. In this way we can represent degenerate dimensions =-=[5, 7]-=-, thereby providing other fact features in addition to the measures for analysis. For example, we could store the ticket and line numbers as other ticket features in a fact representing sales tickets,...

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...ion hierarchy at the same time. An example of categorization for the Product dimension can be observed on the right hand side of Figure 1. 4 UML Extension for Multidimensional Modeling According with =-=[4]-=-, An extension to the UML begins with a brief description and then lists and describes all of the stereotypes, tagged values, and constraints of the extension. In addition to these elements, an exten...

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...O approach also allows us to define identifying attributes in the fact class, if convenient, by placing the constraint {OID} next to a measure name. In this way we can represent degenerate dimensions =-=[5, 7]-=-, thereby providing other fact features in addition to the measures for analysis. For example, we could store the ticket and line numbers as other ticket features in a fact representing sales tickets,...

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... cover of the book, ...brings you exactly the information you need to begin working with the UML and take full advantage of the technology for high-quality database modeling and design. Finally, in =-=[8]-=- an Object-Relational Database Design Methodology is presented. The methodology defines new UML stereotypes for Object-Relational Database Design and proposes some guidelines to translate a UML schema...

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...to represent main MD structural and dynamic properties. However, none of them has been widely accepted as a standard conceptual model for MD modeling. Due to space constraints, we refer the reader to =-=[1]-=- for a detailed comparison and discussion about most of these models. The Unified Modeling Language (UML) [3, 10] has become the de facto standard for modeling systems (and not just software) using ob...

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..., and 1 constraints) that extend an existing diagram type to support a new purpose is called a profile. In the last years, some proposals to extend the UML for database design have been presented. In =-=[2]-=-, ...a profile that extends the existing class diagram definition to support persistence modeling is presented. This profile is intended to make objects persistent (save objects between sessions) in...

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...ta Modeling profile for the UML is described, ...including descriptions and examples for each concept including database, schema, table, key, index, relationship, column, constraint and trigger. In =-=[9]-=-, as it is said in the back cover of the book, ...brings you exactly the information you need to begin working with the UML and take full advantage of the technology for high-quality database modelin...