Seven recent papers have aimed toextract Big Data trends, challenges and opportunities. Provide a survey on scalable database management: updating of heavy application, analytics and decision support. Likewise, study analytics in Big Data with a focus on data warehouse. These two papers have different goals comparatively to. In a more rigorous way, M. Pospiech and C. Felden have selected relevant and recent papers which tackle different aspects of Big Data and have clustered them in four domains: Technical data provisioning (acquisition, storage, processing), Technical data utilization (computation and time complexity), Functional data provisioning (information life cycle management, lean information management, value oriented information management, etc.) and Functional data utilization (realms where big data is used). At the end of their clustering, note that a lot of papers (87%) are technical and that there is not any paper on functional data provisioning. More closed (compared to the three previous works) to our target, semantics in the age of Big Data, focus on knowledge discovery and management in Big Data era (flooding of data on the web). As our paper they zoom on gathering relational facts, information extraction, emergence of structure, etc. But a deep circonscription of the concept of Big Data is not in the scope of their article like some other key themes of this paper like reasoning on large and uncertain OWL triples, coreference resolution, ontology alignment. The last paper has been authored by . They present Big Data integration in a easyunderstandable-way. Schema alignment, record linkage and data fusion are presented w.r.t to Big Data characteristics (volume, velocity and variety). Knowing the high value carried by data in general and thus by Big Data, it is not surprising therefore that Chief Information Officers (CIOs) are interested in it analytics as technological. If initially web pages and traditional databases were the raw materials respectively for search engine companies and other businesses, now it has been mixed