We believe that, to manage Web data effectively, there is a need to build a data warehouse of Web data, i.e. a Web warehouse. In this paper, we focus on how to represent and store relevant hyperlinked Web documents effectively in a Web warehouse called WHOWEDA (WareHouse Of WEb DAta) for further querying and manipulation. We present a simple and general model for representing metadata, structur...

Data warehouse architectural choices and optimization techniques are critical to decision support query performance. To facilitate these choices, the performance of the designed data warehouse must be assessed. This is usually done with the help of benchmarks, which can either help system users comparing the performances of different systems, or help system engineers testing the effect of vario...

‎This paper proposes a multi-supplier multi-product inventory model in which the suppliers have unlimited production capacity, allow delayed payment, and offer either an all-unit or incremental discount. The retailer can delay payment until after they have sold all the units of the purchased product. The retailer’s warehouse is limited, but the surplus can be stored in a rented warehouse at a...

The data warehouse has become a necessary component for an effective analysis of large businesses. It is widely accepted that the data warehouse must be structured according to the multidimensional model to facilitate OLAP analysis. The two driving force for the design of a multidimensional model are data source and business requirements. In recent years in addition to operational databases, we...

Data Warehouse systems can extract relevant information from a large volume of data. Since the purpose of this information is to facilitate the decision making, it’s important to ensure Dependability of the system which delivers it. Thereby the dependability’s requirements must be taken into account in the early stages of the development process of the Data Warehouse system (DWS). In previous w...

We consider a one-warehouse, N-identical-retailer model. Random demands occur at the retailers with complete backlogging. The retailers replenish their inventories from the warehouse, which in turn orders from an outside supplier with unlimited stock. Each retailer places an order every N periods according to a base-stock policy, and the reorder intervals of the retailers are staggered so that ...