1. Chen, P. s., and Akoka,J. (2006). Optimal design of distributed information systems. IEEE trans. comput. c-29, 12, 1068-1080.
The source is reliable. Chen and Akoka are renowned authors. Their credentials are highly rated and by so the article is authentic. Besides this is a primary source in which was written within the context of the problem being looked at. This article has proven to be accurate for most of the information is correct. However, in its objective as in relation to its information, there some evidence of bias, especially as regards to Query Optimization. The pages to ...
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Rule discovery
Every database administrator needs to uncover new information concerning the data relations and database relations. Rule discovery therefore is the name given to this process. Rule discovery is defined as the search for patterns, regularities and correlations in the target database by utilizing every available information source (Shneiderman, & Goodman, 2006). By the realization of these relations and regularities, application of optimization queries becomes much easier in the process. A clear and a better outcome will be realized as compared to a situation where the knowledge of the rules in question is not known.
In the past, researchers have researched in ...
Query optimizer architecture
Given a database and a query on it, there a number of processes through which the query is run through with all the processes having different execution plans. In the optimization process the best plan is selected after careful consideration of all the option plans available.
Query optimizer architectural definition gives a better understanding of the tests that are done on the alternatives give (Epstein, 2008). Below is a simple architectural view of the query optimization process.
In the simple architecture above, a classification is given based on two stages of the model; the rewriter and the planning stages. Each stage has its own ...
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Envisage a situation in which you are standing facing a delicate buffet overflowing with several delicacies. The objective is to try all of them out, however you must make a decision on what sequence and what substitute of flavors will make the most of the general delight of your appetite. Even though much less satisfying and prejudiced, these are the forms of difficulties that query optimizers are required to resolve. Provided a query, there are numerous schemes that a DBMS can pursue to process it and create its response. All plans are equal in the basis of their ultimate output however they differ in ...
The query optimization problem
Lack of precise statistical information about the database hampers greatly the optimization of queries in database systems (Raghu, & Johannes, 2003). Good algorithms have to be applied in the process of query optimization if success is to be achieved in a greater manner (Walker, 2007).
In this paper, we define a query as a kind of language expression used to describe data elements to be retrieved in the database (Garcia-Molina, Ullhman, & Widom, 2004). Application of queries is done in many different settings. In many cases, users send direct requests to the databases in order to get the general structure of ...
Abstract
The discussion over the advantages and disadvantages of the cloud computing is being held over the years. There are three models that are used in order to define has this technology will be used, such as SaaS, PaaS and IaaS. This paper provides the overview of the differences of those models and cover the concerns that are associated with the use of the cloud computing. Even though the future of any technology is not easy to predict, we try to analyze the current market of cloud computing and based on that try to predict how it will evolve with ...
Introduction
Computing security is a significant aspect that needs to be undertaken in any organization. With organizations adopting the use of information systems in their business operations, there is a growing concern to have a secure network perimeter. Most attacks come through the organization’s most valued asset, which is the computer network that is being used. Network security requires that there be a professional that will take care of the network and ensure that there is close monitoring of the network traffic. It is important to understand the requirements of the network and have ways in which the network will have controlled perimeter ...
