Data warehousing, data mining and online analytical processing represents some of the
latest trends in computing environments and information technology application to large …

Data Warehouse is a repository of large amount of data collected from multiple data sources.
It is mainly used for processing of queries and detailed analysis of data that is useful for …

In the 20th century, computers were senseless brains, but today, thanks to sensor networks,
they can feel things for themselves. This major trend has given rise to many wireless sensor …

Materialized view (MV) is one of many technical optimizations like index and fragmentation.
This technique ensures a similar answer for a workload. In other word, it is used to prohibit …

Data warehouse (DW) can be defined as a set of data cubes defined over the source
relation. To avoid complex query evaluation based on master table, to increase the speed of …

To gain the competitive advantage, valid and timely information is the key. Information is
produced and consumed at a very fast rate in today's era. This is the impact of data …

In this paper we propose an approach, which is based on Markov Chain, to cluster and
recommend candidate views for the selection algorithm of materialized views. Our idea is to …

Materialized view is a database object used to store the results of a query set. It is used to
avoid the costly processing time that is required to execute complex queries involving …

While many access control models have been proposed, little work has been done on the
efficiency of access control systems. Because the access control sub-system of an …

In this paper, we present an approach to optimize ego-centric aggregate queries, in graph
databases, by precomputing (materializing) some of their results. Ego-centric aggregate …