Hierarchical Schema. In hierarchical database model, the data is organized into a tree-like structure and the data is stored as records which are connected to one another through links.
The vertical integration of software is all about improving the functionality of your software by dividing your overall software system up into subsystems and then integrating those subsystems together according to the functions that they perform.
A local area network is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.
Binary number is a number expressed in the base-2 numeral system or binary numeral system, a method of mathematical expression which uses only two symbols: typically "0" and "1".