An ocean current is a continuous, directed movement of seawater generated by forces acting upon this mean flow, such as breaking waves, wind, the Coriolis effect, cabbeling, temperature and salinity differences, while tides are caused by the gravitational pull of the Sun and Moon.
RDDs - Radar Detector Detectors, All Acronyms, viewed April 15, 2017, <https://www.allacronyms.com/RDDS/Radar_Detector_Detectors>.
A data flow diagram (DFD) is a graphical representation of the flow of data through an information system, modelling its process aspects.A DFD is often used as a preliminary step to create an overview of the system, which can later be elaborated. data flow diagram (DFD) is a graphical representation of the flow of data through an information system, modelling its process aspects.