An Object Oriented Multidimensional Data Model for OLAP
نویسندگان
چکیده
Online Analytical Processing (OLAP) data is frequently organized in the form of multidimensional data cubes each of which is used to examine a set of data values, called measures, associated with multiple dimensions and their multiple levels. In this paper, we first propose a conceptual multidimensional data model, which is able to represent and capture natural hierarchical relationships among members within a dimension as well as the relationships between dimension members and measure data values. Hereafter, dimensions and data cubes with their operators are formally introduced. Afterward, we use UML (Unified Modeling Language) to model the conceptual multidimensional model in the context of object oriented databases.
منابع مشابه
The GOLD model: An Object Oriented multidimensional data model for multidimensional databases
There has recently been an increased interest in multidimensional databases (MDB) and On-line Analytical Processing (OLAP) scenarios. OLAP systems impose different requirements than On-line Transactional Processing (OLTP) systems, and therefore, different data models and implementation methods are required for each type of system. There have been several different multidimensional data models p...
متن کاملUnderstanding Analysis Dimensions in a Multidimensional Object-Oriented Model
OLAP defines a set of data warehousing query tools characterized by providing a multidimensional view of data. Information can be shown at different aggregation levels (often called granularities) for each dimension. In this paper, we try to outline the benefits of understanding the relationships between those aggregation levels as PartWhole relationships, and how it helps to address some seman...
متن کاملModelling Large Scale OLAP Scenarios
In the recent past, different multidimensional data models were introduced to model OLAP (‘Online Analytical Processing’) scenarios. Design problems arise, when the modeled OLAP scenarios become very large and the dimensionality increases, which greatly decreases the support for an efficient ad-hoc data analysis process. Therefore, we extend the classical multidimensional model by grouping func...
متن کاملConceptual Level Design of Object Oriented Data Warehouse: Graph Semantic Based Model
This paper proposes a Graph semantic based Object Oriented Multidimensional Data Model (GOOMD). The model defines a set of graph based formal constructs that are used to specify the conceptual level design of data warehouses (DW). Besides offering a novel graph based semantic for multidimensional data representation, the proposed GOOMD model renders a unified realization of different logical st...
متن کاملAn Object Oriented Approach to Multidimensional Database Conceptual Modeling (OOMD)
In the recent past, there has been an increasing interest in multidimensional databases (MDB) and On-line Analytical Processing (OLAP) scenarios. Several multidimensional models have been proposed in the last days. However, very few works have been focused on the area of multidimensional database conceptual modeling. Moreover, they are either conceptual extensions to the classical multidimensio...
متن کامل