scholarly journals Design and Implementation of a Middleware for Data Storage in Opportunistic Grids

Author(s):  
Raphael Y. De Camargo ◽  
Fabio Kon
2014 ◽  
Vol 687-691 ◽  
pp. 1872-1875
Author(s):  
Ying Ying Weng

According to the automobile industry cluster situation at present, the paper introduces the method and train of thought of automobile industry cluster based on GIS from demand analysis, data base design, function design and so on. Also demonstration analysis in one automobile industry cluster. In construction, use client layer, web layer, business logic layer and data layer to design the system architecture. It improved the system maintenance performance, used Oracle and ArcSDE to access space data and attribute data, and mass data storage management. Research results maybe give some significance reference for design and implementation of automobile industry cluster.


Author(s):  
Elias Z. K. Ioup ◽  
John T. Sample

Granularity is often ignored when designing geospatial Web services. Choices relating to granularity affect service interfaces, data storage and organization, and XML format design. This chapter highlights the importance of analyzing usage and performance requirements when deciding on granularity choices in the design of geospatial Web services. Often, instead of making design decisions based on these requirements, geospatial services are implemented using default, commonly used techniques which may reduce performance, increase complexity, or fail to fully meet user needs. This chapter discusses the importance of granularity in designing and implementing geospatial Web services and provides common examples that highlight the different approaches to granularity which are available.


2014 ◽  
Vol 686 ◽  
pp. 316-320
Author(s):  
Ye Zhao ◽  
Guo Ying Lu ◽  
Li Ying Wang

The architecture of the system is divided into some modules according to the operating level: interface layer, the database engine layer, and data access layer, database maintenance module and data storage module. This paper discusses in detail the data definition design and the important function of EDB and realizes the EDB management implementation details. The paper introduce in details the EDB system architecture, the design of physical storage structure and basic table structure. Through the actual use, the database system is suitable for embedded systems with limited resources, has good portability.


2014 ◽  
Vol 610 ◽  
pp. 658-666
Author(s):  
Hao Li ◽  
Jun Feng Qiao ◽  
Cheng Ying Liu ◽  
Zhao Wang

the security of database system as the core component of data storage has been increasingly important. Effective audit of the database system can reduce the potential security risk. Practical database audit system should not affect the operation of the existing system which uses audited database. This paper presents and implements a multi-protocol database audit system based on bypass mode, and has a detailed description of the function of each module and the interface between them. This paper designs a detailed database audit policy to achieve effective audit. In the second half of this paper, we focus on the implementation of the key technologies which contain Zero-copy and flow table. Keywords-database;zero-copy;flow-table;policy;audit


Author(s):  
Adnan Asad Vohra ◽  
Dr. Srividya P

In the day and age of data and information, the ability to retrieve the information becomes of paramount importance. The cutting edge technology in terms of data storage is currently Solid State Devices which use NAND gates to store data. This relatively new method of storing data presents numerous avenues of research and breakthroughs. The concept of Zoned Namespaces in SSD firmware is one such major avenue of ongoing research. The objective of this paper is to understand the need for higher data accessing speeds and envisioning the advancements made possible by improving basic read and write speeds in SSD's. The goal is to allow for writing sequential data in namespaces where the data related to each other holds a granularity of a single zone. The idea is achieved by implementing sequential read ahead where the sequential data is read ahead of time by anticipating host read request to that data. This gives the host, cache hit on requested data which greatly improves performance. The pre-fetched data is cleared from cache once the data has been read or any disabling condition occurs thus not hampering normal functioning of the drive. The implementation was tested on a 8 TB form factor SSD. The results for reads were 70 MB/s for ZNS before SRA and 275 MB/s after SRA enablement. Thus a very significant increase is observed which proves that the objective was achieved.


2018 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Chao Wang

The current situation and demand of police management based on geographic information, networking, cloud computing, webService, arcgisServer and Wencheng public security, put forward the general idea to build a set of mobile police office system, and discusses the SOA architecture, data integration, data mining, data storage and visualization of mobile Internet the key content of the final completion of a complete set of police mobile command system GIS.


2013 ◽  
Vol 712-715 ◽  
pp. 1158-1161
Author(s):  
Mei Rong Xu ◽  
Bo Wen Wang ◽  
Meng Li ◽  
Jian Xi Wang

Loading subsystem is an important module of the FEM software: its performance can directly affect the correctness of the calculation results of the FEM system, as well as the speed of system operation. In this paper, we apply MFC technology, the VS2010 platform and use the ACCESS database as data storage tools to develop the loading subsystem. By means of defining data class and data management class, the function of loading subsystem was achieved. Finally, the cases illustrate that the subsystem can draw beautiful boundaries and keep the value accuracy. This article provides the design and implementation for a similar system reference.


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