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Simulation Multi-Conference

作者： Gabriel Ovando-Leon Luis Veas-Castillo Mauricio Marin Veronica Gil-Costa Universidad de Santiago de Chile Santiago Chile Universidad Nacional de San Luis San Luis Argentina

The amount of data on the Web and the number of users accessing those data drastically grows every year. Web-based services have to be able to receive and process those requirements within the shortest possible time. Additionally, they have to manage sudden and unpredictable peaks of user requirements for accessing the data. To tackle these problems, nosql databases have been designed to provide scalability and good performance. However, it is important to know in advance the number of resources (i.e. computers, network capacity) to efficiently deploy a database application. In this work, we propose a simulator for a nosql database named MongoDB. Our simulator aims to detect saturation levels of the resources to ensure an efficient execution of MongoDB upon different users demands and upon failures of resources.

关键词： MongoDB Performance evaluation nosql database

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A study of nosql database for enterprises 4

A study of NoSQL Database for enterprises

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4th International Symposium on Computer, Consumer and Control (IS3C)

作者： Chen, Jeang-Kuo Lee, Wei-Zhe Chaoyang Univ Technol Dept Informat Management Taichung Taiwan

ISBN: (纸本)9781538670361

Popularization of big data makes the enterprise need to store more and more data. The enterprise's database must access data as fast as possible, but RDB has the speed limitation due to the join operation. Many enterprises have changed to use nosql database which can meet the requirement of fast data access. However, there are more than hundreds of nosql databases. It is important to select a suitable nosql database for a certain enterprise because this decision will affect the performance of the enterprise operations. In this paper, 15 categories of nosql databases will be analysed to find out the characteristics of every category. Some principles are proposed to choose an appropriate nosql database for different types of enterprises.

关键词： Big Data nosql database HBase MongoDB RDB

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Model Transformation From Object Relational database to nosql Document database 19

Model Transformation From Object Relational Database to NoSQ...

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2nd International Conference on Networking, Information Systems and Security (NISS)

作者： Fouad, Toufik Mohamed, Bahaj Univ Hassan 1 FST Settat LITEN Lab Settat Morocco

ISBN: (纸本)9781450366458

With the high increase of data growing, nosql databases play a key role in storing large amount of data, to gain flexibility and scalability many industries are now replacing their relational and object relational databases by adopting nosql database technology for business application. However, a lot of work have been done to transform the schema and migrate the data from relational database to MongoDB, but as far as we know a few approaches has been proposed to cover the object relational database transformation. This paper describes some approaches of migration, and proposes an approach of model transformation from object relational database to nosql document database (MongoDB).

关键词： ORDB Big Data model transformation nosql database Oracle MongoDB

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Analysis and Research on Big Data Query Technology Based on nosql database

Analysis and Research on Big Data Query Technology Based on ...

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2018 4th World Conference on Control, Electronics and Computer Engineering (WCCECE 2018)

作者： Shuiquan Guo Wuhan City Polytechnic

Based on the application of nosql,the classification of nosql database and its big data query technology,as well as the big data operation in the comprehensive analysis system of real-name railway ticketing informatio... 详细信息

关键词： nosql database big data query technology big data query

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Designing a Secure Data Retrieval Strategy Using nosql database 13th

Designing a Secure Data Retrieval Strategy Using NoSQL Datab...

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13th International Conference on Distributed Computing and Internet Technology (ICDCIT)

作者： Saha, Sayantani Parbat, Tanusree Neogy, Sarmistha Jadavpur Univ Sch Mobile Comp & Commun Kolkata India Jadavpur Univ Dept Comp Sci & Engn Kolkata India

ISBN: (纸本)9783319504728;9783319504711

Data collection from distributed cloud storage through SaaS application requires efficient execution of the overall process. This type of cloud computing mechanism can be furnished through shared resources, improved service levels and minimal management effort. Data retrieval from cloud storage by different users through shared resources environment may blend data from different data requests in a single place. Here lies the need of efficient data retrieval strategy among different users that will help in secure data retrieval. When sensitive information is transmitted over the Internet there is high chance of information leakage. So, to prevent security attack like interference attack during query execution becomes a big challenge. This work explores a novel data retrieval strategy in extremely robust and linearly scalable high performance nosql database like Cassandra and presents a brief security analysis while retrieving stored data in shared environment.

关键词： Data retrieval security Flow control Information leakage nosql database

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Fragment Re-Allocation Strategy Based on Hypergraph for nosql database Systems

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INTERNATIONAL JOURNAL OF GRID AND HIGH PERFORMANCE COMPUTING 2016年第3期8卷 1-23页

作者： Chen, Zhikun Yang, Shuqiang Shang, Yunfei Liu, Yong Wang, Feng Wang, Lu Fu, Jingjing Peoples Liberat Army Unit 91655 Beijing Peoples R China Natl Univ Def Technol Dept Comp Sci Changsha Hunan Peoples R China Peoples Liberat Army Unit 95025 Beijing Peoples R China

nosql database is famed for the characteristics of high scalability, high availability, and high fault-tolerance. It is used to manage data for a lot of applications. The computing model has been transferred to "computing close to data". Therefore, the location of fragment directly affects system's performance. Every site's load dynamical changes because of the increasing data and the ever-changing operation pattern. So system has to re-allocate fragment to improve system's performance. The general fragment re-allocation strategies of nosql database scatter the related fragments as possible to improve the operations' parallel degree. But those fragments may interact with each other in some application's operations. So the high parallel degree of operation may increase system's communication cost such as data are transferred by network. In this paper, the authors propose a fragment re-allocation strategy based on hypergraph. This strategy uses a weighted hypergraph to represent the fragments' access pattern of operations. A hypergraph partitioning algorithm is used to cluster fragments in the strategy. This strategy can improve system's performance according to reducing the communication cost while guaranteeing the parallel degree of operations. Experimental results confirm that the strategy will effectively contribute in solving fragment re-allocation problem in specific application environment of nosql database system, and it can improve system's performance.

关键词： Clustering Fragments Fragment Allocation Fragment Correlation Hypergraph Partition nosql database

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Low-power Distributed nosql database for IoT Middleware 5

Low-power Distributed NoSQL Database for IoT Middleware

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5th ICT International Student Project Conference (ICT-ISPC)

作者： Paethong, Pornpat Sato, Mikiko Namiki, Mitaro Tokyo Univ Agr & Technol Tokyo Japan

ISBN: (纸本)9781509011254

The Internet will become to the Internet of Things (IoT). It provides connectivity for everyone and everything that embeds some intelligence in Internet-connected objects to communicate, exchange information, take decisions, invoke actions and provide amazing services. This will bring a new ubiquitous computing and communication era and change people's lives (drastically/entirely). Moreover, the most important component in IoT is database that used for collecting and storing a lot of data from ubiquitous sensing devices. Even though, cloud-based storage solutions are becoming increasingly popular in recent years, it is inconvenient for residential environments because the sensing devices should be connected to the internet for simultaneously sending data to cloud computing. However, this solution has a high cost implication and high power consumption. Therefore, the credit-card sized computer which is fully functional is a good alternative. It is small and inexpensive computer that provides a new opportunity for IoT hardware. As a result, it is possible to use Raspberry Pi as a database server. In this paper, we will explain how to construct a database server for IoT middleware that has data distribution and low-power consumption by using credit-card size computers which have satisfactory performances and affordable price.

关键词： Credit-card Sized Computer Distributed database Embedded System Internet of Things IoT Middleware MongoDB nosql database Low-power Raspberry Pi

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Hands-on Labs for Learning Mobile and nosql database Security 40

Hands-on Labs for Learning Mobile and NoSQL Database Securit...

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40th Annual IEEE Computer Software and Applications Conference Symposium (COMPSAC)

作者： Guo, Minzhe Qian, Kai Yang, Li Univ Cincinnati Dept EECS Cincinnati OH 45220 USA Kennesaw State Univ Dept CS Marietta GA USA UT Chattanooga Dept CSE Chattanooga TN USA

ISBN: (纸本)9781467388450

database systems are at the heart of modern information systems and have become primary targets of cybersecurity attacks. With the advent of mobile and big data computing, new database models and systems, such as mobile and nosql databases, have been emergent and gaining popularity. Nevertheless, these new systems not only recapitulate some of the important security issues in traditional database systems but also introduce new security challenges. Few educational resources are readily available for the security education of these new database systems. This paper presents our ongoing work on developing a set of hands-on labs for the security education of mobile and nosql databases. We discuss the security issues of mobile and nosql databases, present a list of labs that are being developed, and use an example to illustrate the design of the labs.

关键词： database security hands-on nosql database mobile database

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A Bag-of-Features Algorithm for Applications Using a nosql database 2nd

A Bag-of-Features Algorithm for Applications Using a NoSQL D...

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22nd International Conference on Information and Software Technologies (ICIST)

作者： Gabryel, Marcin Czestochowa Tech Univ Inst Computat Intelligence Al Armii Krajowej 36 PL-42200 Czestochowa Poland

ISBN: (纸本)9783319462547;9783319462530

In this paper we present a Bag-of-Words (also known as a Bag-of-Features) method developed for the use of its implementation in nosql databases. When working with this algorithm special attention was brought to facilitating its implementation and reducing the number of computations to a minimum so as to use what the database engine has to offer to its maximum. The algorithm is presented using an example of image storing and retrieving. In this case it proves necessary to use an additional step of preprocessing, during which image characteristic features are retrieved and to use a clustering algorithm in order to create a dictionary. We present our own k-means algorithm which automatically selects the number of clusters. This algorithm does not comprise any computationally complicated classification algorithms, but it uses the majority vote method. This makes it possible to significantly simplify computations and use the Javascript language used in a common nosql database.

关键词： nosql database Image classification Bag-of-Features Modified k-means algorithm

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A new fragment re-allocation strategy for nosql database systems

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Frontiers of Computer Science 2015年第1期9卷 111-127页

作者： Zhikun CHEN Shuqiang YANG Shuang TAN Li HE Hong YIN Ge ZHANG Department of Computer Science National University of Defense Technology Chang sha 410073 China Unit 91655 People's Liberation Army Beijing 100036 China Beijing Aeronautics Engineering Technology Research Center Beijing 100076 China

Abstract nosql databases are famed for the characteristics of high scalability, high availability, and high faulttolerance. So nosql databases are used in a lot of applications. The data partitioning strategy and fragment allocation strategy directly affect nosql database systems＇ performance. The data partition strategy of large, global databases is performed by horizontally, vertically partitioning or combination of both. In the general way the system scatters the related fragments as possible to improve operations＇ parallel degree. But the operations are usually not very complicated in some applications, and an operation may access to more than one fragment. At the same time, those fragments which have to be accessed by an operation may interact with each other. The general allocation strategies will increase system＇s communication cost during operations execution over sites. In order to improve those applications＇ performance and enable nosql database systems to work efficiently, these applications＇ fragments have to be allocated in a reasonable way that can reduce the communication cost i.e., to minimize the total volume of data transmitted during operations execution over sites. A strategy of clustering fragments based onhypergraph is proposed, which can cluster fragments which were accessed together in most operations to the same cluster. The method uses a weighted hypergraph to represent the fragments＇ access pattem of operations. A hypergraph partitioning algorithm is used to cluster fragments in our strategy. This method can reduce the amount of sites that an operation has to span. So it can reduce the communication cost over sites. Experimental results confirm that the proposed technique will effectively contribute in solving fragments re-allocation problem in a specific application environment of nosql database system.

关键词： fragment allocation nosql database hypergraph partition clustering fragments fragment correlation

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