XML data warehouses form an interesting basis for decision-support applications that exploit complex data. However, native XML database management systems currently bear limited performances and it is necessary to design strategies to optimize them. In this paper, we propose an automatic strategy for the selection of XML materialized views that exploit a data mining technique, more precisely th...

Among the various existing models for the warehousing management, the simultaneous use of private and public warehouses is as the most well-known one. The purpose of this article is to develop a queuing theory-based model for determining the optimal capacity of private warehouse in order to minimize the total corresponding costs. In the proposed model, the available space and budget to create a...

As the data sets increase in data warehouse day by day, the cost used for OLAP operations becomes extremely high. One of the most effective ways to solve this problem is to build appropriate materialized views in the data warehouse. In order to select the appropriate views to be materialized with the possible minimized cost, we propose a novel approach to the materialized view selection problem...

Data warehouses collect copies of information from remote sources into a single database. Since the remote data is cached at the warehouse, it appears as local relations to the users of the warehouse. To improve query response time, the warehouse administrator will often materialize views defined on the local relations to support common or complicated queries. Unfortunately, the requirement to ...

In the past, the selection of resources to execute various warehouse operation services was done solely by experts. In this paper, a RFIDbased Resource Management System (RFID-RMS) is designed to help users to select the most suitable resource usage packages for handling warehouse operation orders by retrieving and analysing useful knowledge from a case-based data warehouse for solutions in bot...

In order to acquire a precise and quick response to an analytical query, proper selection of the views to materialize in the data warehouse is crucial. In traditional view selection algorithms, all relations are considered for selection as materialized views. However, materializing all relations rather than a part results in much worse performance in terms of time and space costs. Therefore, we...

Quick response time and accuracy are important factors in the success of any database. In large databases particularly in distributed database, query response time plays an important role as timely access to information and it is the basic requirement of successful business application. A data warehouse uses multiple materialized views to efficiently process a given set of queries. The material...

Animals rely on a wide range of sensory modalities to obtain information about their environment, and to determine the most appropriate behavioural response for a give situation. Scincid lizards use both chemosensory and visual cues in tasks such as mate location, shelter-site selection, and predator evasion. Published literature has focused primarily on the use of chemosensory information by t...