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 ...
How to create a simple design of student exam database in according to the object oriented database management system model?
If we create a simple design of student exam database in the perspective of object oriented database management system model then what kind of attributes and classes in the database can follow in the diagram object oriented management system model?
The student exam database
It is hard copy of student database and their records. It contains basic
detail related to the student and their environment of student. It helps to
maintain the mark sheet record of every student in the particular class of
student. There are some basic attributes and classes related to the student
exam database object.
The Name of student
It is a class related to the student exam database which connected with
strong line. There are three fields in the class of ‘name of student’ following
below
First name, middle name and last name are fields that hold the character
data type.
{First name = Character data type}
{Middle name = Character data type}
{Last name = Character data type}
Roll number
It is a Strong attribute of the particular student of which can help to
easily find the record of the student in the database of student exam. It holds
the both types of data type such as character and numerical.
{Roll number = Character and numerical data type}
Postal Address
It is an attribute of student that helps to find with the combination of
two records from the student record. Such as compare with the parent name data
and student address which is known as composite data attribute. But here the ‘Postal
Address’ is the class in according to the object database and there fields are
following below with types of data type.
{Plot number = Numerical data type}
{Street number = Numerical data type}
{City = Character data type}
{State = Character data type}
{Pin code = Numerical data type}
Photo of Student
It is image attribute of student which can identify by their face of
real time of the student. It very strong attribute without their unique
identity number of student as a roll number in student exam database. It
depends on the size of the image with their recommended criteria in the field
of image box. It also requires the format of the image such as jpg, PNG, jpeg
etc.
{Photo of student = GIF data type}
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