Mobile environment architecture and query processing figure 1(b) depicts the query processing in mobile databases mobile client initiates a query, and retrieve the data from data repository the data repository is available in the fixed network. Spatial query processing as a tool for location based services is one branch of mobile query processing in location dependent query processing, the location information of mobile user is revealed to obtain location based information. The query processing in a mobile environment involves join processing among different sites which include servers and mobile computers because of the presence of asymmetric features in a mobile computing environment and also the need for energy saving, the conventional distributed query processing cannot be directly applied to a mobile. Location dependent query processing in mobile environment diya thomas department of computer science rajagiri school of engineering and technology.
Definition of mobile query processing: join processing carried out in a mobile device receive a 20% discount on all purchases directly through igi global's online bookstore additionally, libraries can receive an extra 5% discount. Mobile network is the shared media and any user of the media can intercept the network when the media are shared, anyone with access to the media can listen to or transmit on the media. Query processing is intimately tied to the data, and the data needs to be moved to the location where query processing can be performed if the query processing occurs at some computing infrastructure at the telephone company, all the data from the cellphone's sensors need to be transmitted to the cell tower and from there to the phone. 4 query processing methods in mobile p2p databases 16 5 an example of the ranked store-and-forward procedure 20 6 flow chart of the market algorithm at a peer 24.
Query processing in mobile computing environment this paper takes a review of different strategies of query processing using the k-anonymity in mobile computing. Distributed query processing for mobile surveillance stewart greenhill and svetha venkatesh department of computing, curtin university of technology.
With the cutting edge technology advance in wireless and mobile computers, the query processing in a mobile environment involves join processing among different sites which include static servers and mobile computers. The query-processing strategy is a hybrid between data-to-query and query-to-data, but it leans more towards data- to-query, thus it is most appropriate for continuous queries. In mobile ad hoc peer to peer (m-p2p) networks, since nodes are highly resource constrained, it is effective to retrieve data items using a top-k query, in which data items are ordered by the score of a particular attribute and the query-issuing node acquires data items with the k highest scores. Data from the mobile cache, and a money foremainder query will be created to retrieve the data not contained in the mobile cache the remainder query will be sent to the data owner for execution.
With the development of mobile devices, interest in the mobile p2p-based services has increased however, the existing schemes spend too much cost to process a continuous range query in mobile p2p network environments in this paper, we propose a new efficient range query processing scheme in mobile. A mobile database is a database that can be connected to by a mobile computing device over a mobile network the effects of mobility on query processing require that algorithms employed must be capable of managing frequent loss and appearance of mobile device in the network, and that overhead should be minimized during periods of low connectivity. An efficient architecture for query processing in mobile environment tpandamuthu and drpbalasubramanie maharaja engineering college, anna university, tamilnadu, india.
Ii abstract this thesis studies mobile query processing incorporating multiple non-collaborative servers the main objective is to investigate how to execute different types of queries. A method for secure query processing in mobile databases d saha and n chowdhury abstract—a method for secure query processing in mobile databases has been presented in this paper. For query processing, which refers to the processing of multijoin queries, we develop three query processing schemes in particular, we formulate the query processing in a mobile computing system as a two-phase query processing procedure that can determine a join sequence and interleave that join sequence with si profitable semijoins to reduce. Issn 2229-5518 a survey on mobile databases and query processing in mobile databases arpita mishra, s p singh abstract- mobile computing is increasingly becoming more and more popular as people need information even on the move in this rapid changing information world.
Plan refinement/ code generation 1) mobile client system each mobile client is composed of three modules as shown in figure 6 a resource manager which manage the client cpu for handling the query results, a client manager which processes the query requests and passes them to the server, models the disconnection operation, and receives and. Abstract this thesis studies query processing in a mobile environment the main objective is to investigate the performance improvement of mobile query processing, focusing. Thus, the notion of queries in mobile sensor networks needs to be further developed to clarify the the semantic of queries and to specify validity and imprecision of queries localized and collaborative processing.