Abstract Data warehouse (DW) has been widely recognized as an effective solution for integrating diverse sources. In this environment, Extraction-Transformation-Loading (ETL) processes constitute the integration layer which aims to pull data from data sources to targets, via a set of transformations. ETL is responsible for the extraction of data, their cleaning, conforming and loading into the target. At the beginning of DW project,... Data warehouse (DW) has been widely recognized as an effective solution for integrating diverse sources. In this environment, Extraction-Transformation-Loading (ETL) processes constitute the integration layer which aims to pull data from data sources to targets, via a set of transformations. ETL is responsible for the extraction of data, their cleaning, conforming and loading into the target. At the beginning of DW project, one of the most important tasks is to construct conceptual design of ETL processes. Several solutions have been proposed to support ETL designer in this task. Nevertheless few methods have accompanied these proposals. In this paper, we present a method for modeling and organizing ETL processes based on our experience in real world. More precisely, we suggest modularizing an ETL process into six modules. Namely, Technical Check, Semantic Check, Standardization & Cleaning, Mapping, Particular Processing and Rejects Management Bus. The proposed approach takes four inputs and produces, exactly via ENGINE device, a conceptual model of ETL processes using a graphical notation of our framework KANTARA. Finally, we give guidelines how to construct our method inputs. Read More Read Less

Abstract This paper presents an implementation of a flexible multi-currency electronic payment system. The proposed system operates in local currency and also has the functionality of making payments in different currency. This was made possible by incorporating a currency converter module into the developed system. The technological approach adopted in this work was based on open source solutions. The system is... This paper presents an implementation of a flexible multi-currency electronic payment system. The proposed system operates in local currency and also has the functionality of making payments in different currency. This was made possible by incorporating a currency converter module into the developed system. The technological approach adopted in this work was based on open source solutions. The system is implemented on web-based platform. Apache was used as the Web server with PHP scripting language for server side processing. Open-SSL library was used for data encryption, and rolebased authentication was built into the system as security pass-mark for accessing information in the database. Read More Read Less

Abstract Scrum is rapidly being adopted as an effective project management methodology for small and medium software projects. An important artifact of the Scrum framework is its Product Back log which serves as its basic requirement capturing document. This paper investigates different methods of requirement capturing in the Product Back log and identifies their pros and cons.... Scrum is rapidly being adopted as an effective project management methodology for small and medium software projects. An important artifact of the Scrum framework is its Product Back log which serves as its basic requirement capturing document. This paper investigates different methods of requirement capturing in the Product Back log and identifies their pros and cons. Read More Read Less