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Li-Fi vs Wi-Fi: A Battle of Light and Waves

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 ...
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What is an example of a relational database?

What is an example of a relational database?

Relational database included attributes and records. Where the record is made up of rows and attributes are made up of columns.

The row is also known as tuple on the relational database model.

The columns have many names such as attribute, property, characteristic etc.

The key attributes are also included in the relational database model which is used to identify the user is unique and easily accessed and found from the relational database through the key attributes that are applied in the user record and its attribute. Such as serial number as a primary key, department of ID number which is in the sequence with number and alphabet combination.


Introduction to the topic of computer related and the topic is related to the computer database technology and architecture following below here:


What is an example of a relational database?


Let's discuss the topic related to computer systems and database and the topic is "What is an example of a relational database?" following below here:


In this topic you can learn about the relational database model and its components that describe the relational database model.

Such as record or tuple and attribute or property and key attributes also included in the relational database model which is easily used for manipulation query applying with the primary key attributes if the particular record is needed to update information, insert a data or delete the data etc.

These are the manipulation commands in the relational database model performed in the relational database model which is known as Data manipulation language commands or DML in the relational database model.

The relational database model only processes the text data.


What is an example of a relational database?

There are some points on the computer system and relational database model development example related to the topic of "What is an example of a relational database?" following below here:


What is an example of a relational database?

  • Relational database contains the records and attributes or tuple and fields or property in a row and column respectively
  • Relational database is defined by DDL category of command 
  • Relational database manipulate by DML category of commands
  • Relational data model controlled by the DCL commands
  • If you find the particular record using the key attributes then give an example


Let's discuss the points listed above about the computer system and database technology related to the topic of "What is an example of a relational database?" explanation following below here:


Relational database contains the records and attributes or tuple and fields or property in a row and column respectively

Relational database contains the records, the records are the row detail of the object or subject or any personal detail described with their attributes filled in the columns of every record mentioned in relational database model.

Relational database contains the attributes which describe the properties or characteristics of the records of the object or subject or any person.

The description is also a part of an attribute which is used to explain the object, subject, person in one or more sentences in 100 to 10000 words of consistency to tell about the records that have unique key attributes to identify quickly and uniquely.


Relational database is defined by DDL category of command 

Relational database is defined by the DDL category of command that means the relational database defines the data defines types of command to create a database file in the database software.

And some commands which are used delete the database file from the database server application software.

The database file is used to store the records and attributes data in the table format.

Row and column are based on the relational database file on the database software.

The data definition language is used to define the database file and delete also, where the triggers and indexes are also defined by the DDL commands in database server application software.


Relational database manipulate by DML category of commands

Relational database manipulation by DML category of commands means the dml is used to manipulate the data in the database file which has been defined by the DDL commands.

DML commands to edit the data in the database files which have been already defined by the DDL commands on the database server application software.

The database server application software is used to provide the DML commands to manipulate data such as update the data from the particular selected record on the database file which has defined already but it need to update or change the not for whole record it just change the attributes mentioned also if the user requires to change the data of record.


Relational data model controlled by the DCL commands

Relational data model controlled by the DCL commands that means the relational data model controlled the data for security model of application software or database server application to apply on the database file to grant the permission who knows the username and password to access the database file which has defined stored some data in the record and it's attributes.

The DCL command is used to protect the data using the data control language to apply the command to get access with the data of username and password which is correct to verify.

Relational data model controlled on the database file by the DCL when the user applies these types of command to protect the personal database file.


If you find the particular record using the key attributes then give an example

If a user finds some record from the particular database file on the database server application software then the user uses the command of the select command from the DML commands group to apply and manipulate to search the particular records from the database file on the database server application software.

For example:- If the user finds a record such as 09 of serial number, Brad, from the department of Computer science engineering. Then the user apply the command of select then SELECT where "serial number = 09";

Then enter it on the query processor of the database software.

It is a basic example of record finding from the SELECT command where it is used to mention the user id number which is serial number and the serial number attribute is a key attribute of primary key.

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