Communication satellites are human-made satellites that work in such a way that the satellite receives a signal from one point on earth, amplifies the signal and send it back to another point earth using transponders. Thus, it creates the communication network between the source that transmitted the signal and receiver. Communication satellite or the artificial satellite can … [Read more...] about Communication Satellites
Guided Transmission Media
Guided transmission media is the physical medium that is used to transfer information bits from one computer to the other. The physical medium directs the path that information bits have to follow to reach the desired receiver. The other transmission medium is the unguided transmission media which does not incorporate any physical medium for the transmission of the … [Read more...] about Guided Transmission Media
Big Data
Big data can be defined as extremely large data that increases with time. Big data collects data from disparate sources and the data is so complex that you cannot employ any traditional method or tool to manage such huge data. Big data is not a data repository like data warehouse but it is a technology invented to manage an extremely large data. In this section, we will be … [Read more...] about Big Data
Data Cube
A data cube in a data warehouse is a multidimensional structure used to store data. The data cube was initially planned for the OLAP tools that could easily access the multidimensional data. But the data cube can also be used for data mining. Data cube represents the data in terms of dimensions and facts. A data cube is used to represents the aggregated data. A data cube is … [Read more...] about Data Cube
Difference Between Data Warehouse and Data Lake
Data warehouse and data lake both are the centralized storage on an enterprise. But the basic difference between data warehouse and data lake is that the data warehouse has the structured and pre-processed data contrary to this the data lake accommodates a heterogeneous data in its raw format. Data in a data warehouse is analyzed for retrieving strategic information which … [Read more...] about Difference Between Data Warehouse and Data Lake