Samyak

SQL is a query language created in the 1970s as a way for users to communicate with relational databases to store, organize, and manage data. SQL is popular worldwide with companies of all sizes that need to store and analyze data.  NoSQL refers to a newer type of database (called a non-relational database) that doesn’t require you to use SQL. While relational databases (sometimes called SQL databases) have been the primary model for data management over the past decade, non-relational databases are gaining popularity as an alternative model for managing data. They are particularly well suited for companies that need to store and maintain large amounts of unstructured data. Let’s discuss the differences between SQL and NoSQL, how NoSQL’s design helped overcome some challenges of SQL, and why this evolution in database management is happening. Database The database is a collection of inter-related data which is used to retrieve, insert and delete the data efficiently.  It is al...

  Building Automation Systems (BASs) provide means to control as well as monitor various operational aspects of buildings. Activities that typically require human interface such as data logging, equipment health monitoring, data analysis etc. can be automated by a BAS system to reduce human error – as well as enhance efficiency and accuracy of data. With the cost of manpower increasing, and the need to operate and manage buildings at the lowest possible cost, BASs are finding their ways in more and more building designs. A BAS while costing more at the build stage helps lower operating costs for the owners and the payback periods for the Capex are in the range of 2 to 4 years. A typical BAS installation enables equipment and systems of a building such as the generators, HVAC plants, domestic water systems etc. to be ‘connected’ to a management system through sensors. Sensors capture system data such as pressure, temperature, flow etc., as well as the state of the equipment – on or ...

INTRODUCTION   The LiFi technology invented by the by the German physicist Prof. Harald Haas in the year 2011. He proposed the LiFi technology, provides data transmission through the beam of light by sending data through a Light Emitting Diode (LED) that varies in intensity faster than the human eye can catch. Because of increasing demand in the wireless data communication. The available radio spectrum below or up to 10GHz nowadays become insufficient. The wireless communication industries have responded to this challenge by taking into consideration the radio spectrum above 10GHz. However, higher frequencies (f), means that the path loss (L), increases according to the Friis free space equation (L ∝ f 2) [1]. As transmission of data from the one place to another is one of the major activities day-today, in present days the current wireless networks that connect us to the internet are slow if in that networks multiple devices connected. And the solution to this problem is by the ...