Data Warehouses and Business Intelligence (BI) applications are the top two priorities for CIO/CTOs (Celent report on December 14, 2005). A data warehouse IT infrastructure needs to support the requirement of (day time) ad hoc query response time and (night time) batch workload completion time. The following tasks need to be finished in a batch window: (1) Apply one day’s delta data to the base...

A data warehouse is an integrated database whose data is collected from several data sources, and supports on-line analytical processing (OLAP). Typically, a query to the data warehouse tends to be complex and involves a large volume of data. To keep the data at the warehouse consistent with the source data, changes to the data sources should be propagated to the data warehouse periodically. Be...

We develop a two-warehouse production model with imperfect items. Production rate is taken as the linear combination of on-hand inventory and demand, while demand rate is taken as function of time. Most of the researchers consider that the production rate is independent from the demand rate. In this paper we assume production rate as being dependent on the demand rate, and this assumption is mo...

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...

This study is an extension of the Joint Replenishment Problem (JRP) that takes into accounts warehouse-space restrictions. The focus of this study is to determine the lot size of each product under power-of-two policy to minimize the total cost per unit time and to generate a feasible replenishment schedule of multiple products without exceeding the available warehouse-space. In order to solve ...

Mobile robot navigation has remained an open problem over the last two decades. Mobile robots are required to navigate in unknown and dynamic environments, and in recent years the use of mobile robots in material handling has considerably increased. Usually workers push carts around warehouses and manually handle orders which is not very cost‐effective. To this e...

Data warehouses contain sensitive data that must be secured in two ways: by defining appropriate access rights to the users and by preventing potential data inferences. Inspired from development methods for information systems, the first way of securing a data warehouse has been treated in the literature during the early phases of the development cycle. However, despite the high risks of infere...

Third-party-logistics warehouses have been gaining popularity in recent years mainly due to their ability to buffer the material flow along a supply chain and consolidate the products from various suppliers, which has a major impact on supply chain efficiency. The issues and challenges in warehouse management are similar in many ways to those faced in manufacturing control, resilience and adapt...

Data warehousing is gaining in popularity as organizations realize the benefits of being able to perform sophisticated analyses of their data. Recent years have seen the introduction of a number of data-warehousing engines, from both established database vendors as well as new players. The engines themselves are relatively easy to use and come with a good set of end-user tools. However, there i...