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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 ...

What are the advantages of the distributed database management system database model or data model?

What are the advantages of the distributed database management system database model or data model?

Advantages of the distributed DBMS data model or database model

  • In the distributed data model the data can share in the computers.
  • One data can share one computer to another computer.
  • The shared data between the computers you can manipulate the data for data processing work.
  • If the attackers attacks one computer system and the system will damaged then your shareable data can help to recover the system also you can use the data for working purpose.
  • Distributed data transfers to the computer using cryptography method if the computer systems are connect with wireless technology.
  • The cryptography methods are more secured to exchange the data among computers because the art of this language is program with special characters.
  • Some important data you can divide into parts which you have to store and share in the different databases, this method safest to the database security.




Can a distributed database model recover the lost database?


in the image shows the distribute database management system and this system provide the data recovery from the storage device in the distributed system to the computer system as shown in the figure.

Yes, the distributed database management system provides the flexibility of the database accessing from any server devices.

The distributed database system provides the recovery feature to the user when the user accesses the file which has been lost from their own device or computer and the user can access and recover the file from the distributed system from the server network which is connected to the storage device or NAS or SAN.

The file can be recovered such as:- a user has lost their file or suddenly deleted from the storage device and cannot access it which is useful for the user.

The user can recover and find the file from the different server in the distributed system such as:- where the user user distributed file and saved into the storage device which is connected to the distributed system then finding query provide the file which has been lost and the nearby server provide the file to the user to access easily on the distributed system for their computer system or smartphone device.

Replication is not enable on the distributed system:-

The user cannot recover or retrieve the file from the distributed system if the replication is not enabled on the distributed system and the data has been permanently lost.

The replication is a term where the user makes a copy of the same file and distributes it to the other connected servers into the storage device which is used to provide the file from the memory address and found from the searched query processing on the distributed system to recover it. So, finally it is not possible without enabling the replication of data on the distributed system. It depends on the replication process on the distributed database management system.

Some out of date data cannot be accessible from the distributed database management system:-

The distributed system has a limited version to use their service such as:- a limited for outdated database can be deleted itself from the program and cannot be after the timeline conditions.

If the distributed system provides the condition of 1 year of database backup and recovery then it will be considered as the data can be accessible from the distributed system from the other server if the data timestamp will be under 1 year of timestamp otherwise it can be deleted with the scheduled program for the user.

This feature reduces overload the data from the distributed system and reduces more redundancy of the data in the distribute system which is cannot be handled for a large amount of data for the user and some distributed database management system are limited of their physical layer which means the hardware connection of distributed database management system are limited and stores only 1 years as term and condition decided for the user.

If the data has been lost from storage device limited data can be recover from automated system:-

The data can be recovered from the distributed system from the automated recovery system from the program which decides the data which has been lost can be recovered if the user gives a command to recover the backup database from the automated system of recovery otherwise it cannot be recovered. The limited data recovered from the automate system to the empty storage device based on the terms and condition of limited timestamp data will be recovered and outdated database cannot be recovered after timeline cross from the limitations of automated recovery setup from the distributed system.

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