Читать книгу Big Data - Seifedine Kadry - Страница 40

Managing the massive and ever increasing volume of big data is the biggest concern in the big data era. In the past, the increase in the data volume was handled by appending additional memory units and computer resources. But the data volume was increasing exponentially, which could not be handled by traditional existing database storage models. The larger the volume of data, the longer the time consumed for processing and analysis.

The challenge faced with velocity does not only mean rate at which data arrives from multiple sources but also the rate at which data has to be processed and analyzed in the case of real‐time analysis. For example, in the case of credit card transactions, if fraudulent activity is suspected, the transaction has to be declined in real time.