SQL is a programming language used to create and modify data in DB. 

Server is a space processing the backend and stores data from the frontend. 

Software as a Service is an application provided by a provider over the Internet, and is also referred to as a hosted application. There is no need to purchase, install, or run applications on the user's computer. SaaS providers were previously referred to as application service providers (ASP). 

Serial Digital Interface is the standard specification for digital video interface with 270 Mb/s 

Subnet is the logical division of one network into several networks and a subnet mask is a value for representing the subnet.