Li-Fi vs Wi-Fi: A Battle of Light and Waves Li-fi is a light fidelity device that supports only the infrared and other lighting systems to transfer the data to the device which is used to receive from the sender device. Wifi is a wireless fidelity device that supports the radio waves to transfer the data to the wifi device which is used to receive the wifi signals at the limited ranges due to the device version capacity. Introduction to the computer system and computer applications related topics are listed following below here: Li-Fi vs Wi-Fi: A Battle of Light and Waves Let’s discuss the computer system related topic and questions above listed and their answers are following below here: Li-Fi vs Wi-Fi: A Battle of Light and Waves There are some points on the computer system and data communication related to the topic of “Li-Fi vs Wi-Fi: A Battle of Light and Waves” following below here: Lifi based data communication system:- Li-Fi is a light based signal data transmission ...
What is generalization in Database management system technology?
About the Generalization basic points
- The generalization is term in a database model works in lower level entities sets.
- It gives the similarities of the lower level entities sets and among their sets.
- It hides or do not shows the differences of the lower level entity sets.
- It allows or gives permission to represents the economy system.
- It emphasize the shared attributes are not repeated in the lower level entity sets.
- Sometime lower level entity produces higher level entity sets in terms of taking union of several in the generalization in DBMS.
Typical model of the Generalization in the school based model
In the generalization
model of school, the school is the entity but in a higher level entity which is
called super class.
Student is the main
object of the school which is a common entity.
The triangle component is
a generalization component or tool to represent the similarities of the higher
and lower level entity sets where in the model the “Class of 12th” is represent
the generalization of the class categories with the similarities which is “student”.
Section “A” and Section “B” are the lower level entity sets and the students
are also divided in the two sections of the same class.
You can see the possibilities
of the class and their section such as same subjects of the both sections.
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