Whereas traditional databases could consist of thousands or even millions of rows (e.g. the population of a certain city or country), they would have a limited and fixed number of columns i.e. categories of data (e.g. date of birth, home address, gender). In the world of Big Data, however, we can operate with a potentially unlimited and highly dynamic number of columns.
From the EU data protection mechanism perspective, this immediately triggers several questions, among them the scope of data processing and the purpose such processing.
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