Introduction of data cables Data cable is an important part of computer network model . From smartphone to supercomputer connections and wide range network uses and network models. It helps in network model in different types of topology models also. But we discuss what exactly called a data cable? How it is working with network model? Why these data cables are so important? In this guide, I will provide some information about the definitions, types, uses of data cables on network model with easy explanation of data cable covered topics. What is data cable? [Definition] A data cable is a wire that can transfer the data from one to another computer system. It connects to the ports available on the computer system. The user can transfer the data from one computer to another data cable connection. If two computers are connected then:- In according to data cable male port:- Port 1:- the male port of data cable is used to receive the data from the sender computer. Port 2:- th...
What do you understand by the categorization in DBMS?
What do you mean by categorization of object in DBMS?
- Object has so many properties and entity relationship model can express their properties.
- Object has properties to categorize by declaring the classes in the database.
- Sub-classes are also categorizing the object characteristics in the database model.
- Categorization of object is reduces the value of number in counting.
- It can be benefit to the grouping of the object such as gender of same person, city of employees and street of the student in a same class etc.
- The categorizations of the objects are very useful for easily to find the unique object if the unique identify have not yet at a time of the object attributes.
In the categorization the sub-class is known as weak attribute under the
strong attribute in the database model such as you can say ‘state’ is a weak
attribute but the strong attribute is their ‘complete address’ of the person
object lives in the state.
Object has so many properties in DBMS model
Let us take the object as a student of school.
So there are so many attributes of the student in the school which can relate from the school's attributes.
Such as "classes" of every student who is studying in the school. The class is the attribute of the student. The student daily comes in the class of the school and studies in the particular class room with their section as declared by the school.
In the example the student has categorised by their class room and section of the class in the School.
In the school database it reduces the numbering of the student object in the school from the single database of the school and categorised by the class and section.
This means the categorisation of the student in the school by the classes and section of the classes to reduces from single database of the school.
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