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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Document Oriented NoSQL Databases : A comparison of performance in MongoDB and CouchDB using a Python interface / Dokumentorienterade NoSQL-databaser : En jämförelse av prestanda i MongoDB och CouchDB vid användning av ett Pythongränssnitt

Henricsson, Robin January 2011 (has links)
For quite some time relational databases, such as MySQL, Oracle and Microsoft SQL Server, have been used to store data for most applications. While they are indeed ACID compliant (meaning interrupted database transactions won't result in lost data or similar nasty surprises) and good at avoiding redundancy, they are difficult to scale horizontally (across multiple servers) and can be slow for certain tasks. With the Web growing rapidly, spawning enourmous, user-generated content websites such as Facebook and Twitter, fast databases that can handle huge amounts of data are a must. For this purpose new databases management systems collectively called NoSQL are being developed. This thesis explains NoSQL further and compares the write and retrieval speeds, as well as the space efficiency, of two database management systems from the document oriented branch of NoSQL called MongoDB and CouchDB, which both use the JavaScript Object Notation (JSON) to store their data within. The benchmarkings performed show that MongoDB is quite a lot faster than CouchDB, both when inserting and querying, when used with their respective Python libraries and dynamic queries. MongoDB also is more space efficient than CouchDB.
2

Jämförelse av svarstider av NoSQL databaser : Jämförelse av svarstider mellan MongoDB och CouchDB vid ett system som hanterar e-böcker / Performance measurements of NoSQL databases : Comparison of response times between MongoDB and CouchDB in a system that manages e-books

Holmgren, Niklas January 2018 (has links)
Denna studie har undersökt vilken av CouchDB och MongoDB som har lägst svarstider vid hantering av filformaten epub, mobi, txt och html. De operationer som har undersökts är insert, update, select och delete för att se vilken av databaserna som presterar kortast svarstid. Resultatet av undersökningen är att databaserna är bra på olika saker där CouchDB presterade bättre vid inmatning av epub, txt och html-formaten samt vid uppdatering och borttagning av alla format. MongoDB presterade däremot bättre vid hämtning av alla filformaten vilket gör att databaserna är bra i olika situationer beroende på vad databasen ska användas till. Om databasen kommer att utföra många select-operationer passar MongoDB bäst medans vid borttagning och uppdatering passar CouchDB bäst. Vid inmatning beror det på vilket filformat som kommer hanteras mest då databaserna presterade liknande resultat för mobi-formatet medans CouchDB presterade bättre vid de andra formaten.
3

Beach Museum Web Application

Kakkireni, Nithin Kumar January 1900 (has links)
Master of Science / Department of Computer Science / Daniel Andresen / This project involves in developing a responsive web application for Beach Museum at Manhattan, Kansas. Application is built on development boxes using Amazon web services. Project is built on MVC architecture that helps user to search images, create their own collection from the images and include an admin module. Migrating the current existing SQL database to couchDB for better performance of the available data. Integrated Apache Lucene to support text search in the couch database writing different indexes to retrieve the results. Implementing core functionalities like basic search, advanced search, filter objects with respective to artist, decade, object type and relevance using different indexes and Mango queries in the couchDB. Search Results are further chunked and displayed to the user. Web storage API’s were used to provide the functionality for a user to create their own collection (set of Images). Built an Admin module to perform CRUD operations the database. Admin module involves in creating exhibitions, adding/editing works and artists in the couch DB.
4

Lagring av Motion Capture Data i NoSQL-databser : Undersökning av CouchDB / Storage Of Motion Capture Data in NoSQL-databases : Examination of CouchDB

Aslan, David January 2015 (has links)
Motion capture data behöver lagra på ett eller annat sätt lagra detta med databas skulle innebära väldigt många fördelar. Den används på många olika sätt och i olika branscher därmed skulle innebära en stor förändring. Det finns två olika kategorier av databaser SQL databaser och NoSQL databaser, dem databaser som kommer testas är relationsbaserade MySQL och dokumentbaserade CouchDB med en prototyp som utvecklas för att utföra dessa tester. Testerna påvisar att CouchDB är bättre databaslösningen vid lagringen av motion capture data. Men ytterligare arbete skulle kunna utföra flera tester som påvisar att läsning av motion capture data från databaserna kan ske i realtid. Mätningar från experimentet bevisar att CouchDB är den snabbare på att lagra Motion Capture data. I framtida arbete skulle arbetet kunna införas i filmbranschen och bli effektivt genom att använda mindre hårddiskutrymme och minska kostnaderna.
5

A comparison between MongoDB & CouchDB on search performance : A comparative analysis

Kinnander, Mathias January 2018 (has links)
When storing and handling Big Data sets a database management system (DBMS) can be implemented to administrate and query databases. The Swedish Internet is a big unstructured data set that contains all published Swedish Websites since the late 1990’s. NoSQL DBMSs such as MongoDB and CouchDB are particularly suited to store the Swedish Internet. Comparing the search performance of MongoDB and CouchDB in this scenario required the insertion of a subset of the Swedish Internet, querying of the data and measuring the search performance. The results show that CouchDB has in general a superior performance but comes with a drawback which is its indexation time. If a query will only be executed a few amount of times MongoDB is generally the better choice. Further studies needs to be conducted in order to assess the performance of NoSQL DBMSs over the whole dataset.
6

Databaser i molnet : En prestanda utvärdering

Persson, Peter, Sjölin, Johan, Dahlberg, Thomas January 2012 (has links)
Abstract As a developer of database-driven applications you will be faced with difficult choices, when it comes to choosing database, server and programming language. For the result to be satisfactory it requires the different techniques to interact well with each other and also fulfill performance expectations. This is even more important when the application is deployed to the cloud and the response time plays a major role.This paper evaluates different databases and their performance. To test the databases there was an application made in the server script language PHP or Hypertext Preprocessor and it was deployed to Windows Azure cloud platform. The test applications task is to call and load databases by controlled requests which creates, reads, updates and deletes data in an relatively large extent.The results shows that locale databases or databases in the same data center as the server generates the fastest response. The diffrence between NoSQL and SQL is practically nothing when it comes to simple requests. The type of data and the type of usage are major factors in the choice between the two databases.This paper works as a guidance in the choice of database for development of applications in the cloud. Keywords: SQL, NoSQL, databas, cloud, Azure, CouchDB, IrisCouch, database.com, databaseperformance / Abstrakt Som utvecklare av databasdrivna applikationer ställs man inför avgörande val när det kommer till databas, server och programmeringsspråk. För att resultatet ska bli en väl fungerande applikation krävs det att alla tekniker interagerar på ett bra sätt med varandra samt att de uppfyller vissa prestandakrav. Detta blir än viktigare när applikationen lyfts ut i molnet och svarstider spelar en stor roll.I arbetet undersöks olika databasers svarstider med hjälp av en testapplikation som är skriven i scriptspråketet PHP och driftsatt på Windows Azure-plattformen. Applikationens uppgift är att anropa och belasta databaser genom att genomföra kontrollerade operationer som skapar, hämtar, uppdaterar eller tar bort data i relativt stor omfattning.De databaser som praktiskt testats och utvärderats är Azure Table, Azure SQL, CouchDB, IrisCouch samt Database.com.Resultaten visar att lokala databaser, eller databaser inom samma datacenter som servern, generar de snabbaste responstiderna. Skillnaderna mellan NoSQL och SQL är i det närmaste försumbara när det handlar om enklare operationer. I valet mellan de två handlar det i mångt och mycket om vad databaserna ska användas till samt vilken typ av information som ska lagras i dem.Arbetet är tänkt att fungera som en vägledning i valet av databas vid utveckling av molntjänster. Nyckelord: SQL, NoSQL, databas, moln, Azure, CouchDB, IrisCouch, database.com, databasprestanda
7

利用JavaScript Application Framework與CouchDB實作協作雲機制──以盈餘預測系統為例 / The implementation of collaboration cloud mechanism via JavaScript Application Framework and CouchDB ── using earnings-predicted system as example

楊凭哲 Unknown Date (has links)
本研究主要是想要基於協作雲概念下實作一個系統,並且有離線儲存、同步 技術、版本控制等功能,因為 CouchDB 的特性有自動同步與離線儲存技術,符合 協同合作的要求,因此選用 CouchDB 當作系統實作資料庫的選擇,另外也針對 CouchDB 的同步與轉換機制做了詳細的討論。而在系統程式語言方面,為了達到離 線儲存的需求,簡單前後端語言溝通的負擔,選用了 JavaScript Application Framework,採用的是純粹的 JavaScript 語言,客戶端用了 jQuery、YUI3 等JavaScript,伺服器端使用的是 Node.js,達成了一種程式語言,兩個執行時間的條件。確定系統框架與資料庫之後,最後使用盈餘預測系統來做為此實作之範例。
8

Distribuovaný dokumentový server založený na databázi CouchDB / Distributed Document Server Based on CouchDB Database

Kanis, Martin January 2017 (has links)
Thesis discusses distributed database systems and its advantages and disadvantages. Further, text informs about document database CouchDB, storage of documents, synchronization and CAP theorem. The aim of the thesis is to implement distributed document management system and workflow management system based on CouchDB. The system contains a cluster with three CouchDB nodes with HAProxy in front, which does load balancing. The system allows creation of any document based on the template, manages its life cycle and workflow. It is also possible to create a custom workflow using BRMS rules. The implemented solution simplifies document management and workflow and allows a high degree of customization for the organizations needs.
9

Informační systém pro podporu prodeje / Information system for sale support

Štupák, Branislav January 2018 (has links)
The diploma thesis deals with design and implementation of the information system for sale support. In the first part of the thesis is done market analysis and described legislative requirements. These theoretical findings are further applied in the design part of the system. System is designed in spirit of good user experience(UX). Application is created with offline-first approach by React Native framework for cross-platform development of mobile applications. Synchronization between end point devices is done by CouchDB database system.

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