DOI: 10.21276/sjet.2016.4.11.3

Pages: 534-554

The study was to investigate the implementation of data warehouse at selected telecommunication companies in Rwanda (MTN and Tigo) and the objectives were to identify the key factors that lead to successful implementation of data warehousing in MTN and Tigo ,to find out the techniques used to implement data warehousing in MTN and Tigo and to assess the extent to which data warehousing contribute to MTN and Tigo in improving business processes using data collected from their head offices at Kigali. The data warehousing was assessed to find out how it contributes to Telecommunication Company to overcome issues raised with operation systems. The research was carried out using survey, descriptive and explanatory design where both qualitative and quantitative approaches were used. The primary data was collected using questionnaires and secondary data of the documentation review method was used. The targeted population was sampled using purposive method. The finding from the survey indicated the sixteen factors for successful implementation and the buttom up design as implementation technique of data warehousing in MTN and Tigo. Upon this, the finding showed the very high level of contribution of data warehousing to MTN and high level of contribution of data warehousing to Tigo.