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what is data cable? Types of cables, uses of data cables, importance of data cable explained!

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...
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What are the components of data model in [DBMS] Relational Database Management System?

What are the components of data model in [DBMS] Relational Database Management System?

There are five main components of data model in RDBMS

Fields

  • Fields are the attributed of the records.
  • It is also called tuple of the attributes and properties or features.
  • Fields shows the characteristics of the object such as name, age, gender, address etc.
  • It contains also primary attribute or auto number id.

Records

  • Records are tuple or rows in the database.
  • It shows all the data of the object inserted in the rows.
  • It is also collection of the attributes, properties or fields.

Files

  • Files are the collections of the records.
  • It shows the related records in the file data.
  • It is also collections and combinations of the tuples and attributes.

Databases

  • The database is the collection of related files.
  • It is also a group of files which is making relation to each other.

Key field

  • Key fields also called key attribute in the database of relation.
  • There are some key attributes you can apply on the relation database such as primary key, composite key, super key, foreign key, secondary key and candidate key.
  • The record can uniquely identified by the primary key such as auto number id.

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