A Conceptual Model of Temporal Data Warehouses and its Transformation to the ER and Object-Relational Models ?
نویسندگان
چکیده
The following formalization is inspired from [2]. We first describe notations, assumptions, and meta-variables required for defining the abstract syntax and the semantics of the MultiDim model. Next, we give the abstract syntax of the model that allows the translation from the graphical representation to the equivalent textual representation. Finally, after describing the auxiliary functions, we define the semantics of the MultiDim model.
منابع مشابه
Object-Relational Representation of a Conceptual Model for Temporal Data Warehouses
Temporal Data Warehouses (TDWs) allow to manage timevarying multidimensional data by joining the research of Temporal Databases and Data Warehouses. TDWs raise different issues such as temporal aggregations, multidimensional schema versioning, etc. However, very little attention from the research community has been drawn to conceptual modeling for TDWs and its subsequent logical representation....
متن کاملA conceptual model for temporal data warehouses and its transformation to the ER and the object-relational models
The MultiDim model is a conceptual multidimensional model for data warehouse and OLAP applications. These applications require the presence of a time dimension to track changes in measure values. However, the time dimension cannot be used to represent changes in other dimensions. In this paper we introduce a temporal extension of the MultiDim model. This extension is based on research realized ...
متن کاملA Tool for Transforming Conceptual Schemas of Spatio-Temporal Databases with Multiple Representation
Nowadays, classical conceptual models (such as ER or UML) are used for designing database applications. These classical conceptual models usually come with associated CASE tools assisting the user from the creation of the conceptual schema until the generation of a physical schema for a relational or an object-relational DBMS. However, when developing spatial or temporal databases such classica...
متن کاملConceptual modelling-based design of object-oriented databases
The focus of this paper is the transformation of conceptual data models (such as ER, NIAM, PSM) to object-oriented databases. This transformation is captured within the framework of a two level architecture. Conceptual models are rst mapped to abstract intermediate specii-cations, which are then transformed to database schemas in a given object-oriented database environment. This enables us to ...
متن کاملMetadata Enrichment for Automatic Data Entry Based on Relational Data Models
The idea of automatic generation of data entry forms based on data relational models is a common and known idea that has been discussed day by day more than before according to the popularity of agile methods in software development accompanying development of programming tools. One of the requirements of the automation methods, whether in commercial products or the relevant research projects, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007