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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 do you understand by the key attribute in the relational model?

What do you mean by key attributes in the relational model?

Key attributes in the relational database

  • The key attributes are the properties to separate the record in a unique or consistency form in the database of relational model.
  • When we applying the keys attributes on the relation the keys identify the records which has a specific value.
  • The key attributes are uses to find the characteristics of the records in the database.
  • As comparison to find the records by manually that is too slow to find the records.
  • The key attributes allows the consistency of the records when we apply on the database.
  • There are some types of key attributes in the database management system in the relational database. Such as primary key, composite key, super key, candidate key, foreign key and secondary key are uses in the relational model.
  • All of the key attributes are uses to uniquely identify the record in the relation.
  • All names of key attributes are related to their work.

Points to be remember about the key attributes in the relational model

  • It uses to separate the records from the database and identify.
  • It allows the consistency of the records form the database.
  • It is uses to find the records by using query to apply on the database.
  • If you have not unique identity to find your record in the relation you can use other properties such as two or more attributes combination to find the record by using query for key attribute. 

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"I appreciate your attention to this topic! If you have any thoughts or questions, please feel free to share them in the comments below. Until next time, stay curious and keep learning!"

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