31-05-2021

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                                  MODULE-3 

DATABASE

This Week we Established Database .We use FireBase which is a NOSQL Database .

We Used FireBase Because :

  • It provides User Authentication.
  • Provides Real-Time Cloud Storage.
  • Provides Flexible API for easy end developer Implementation.

Configuration of Database :

Once we create firebase , we get the credentials to acces the firebase features,without which we cannot work on it . The credential  is a json file which will be verified using certificate. All these are implemented using a python library provided by firebase called firebase_admin.
Below is the Code for Intializing Firebase.


User Authentication:

Every Enterprise using the product will be given a login credential. 
They can be authenticated from other accounts provided by google or other recognized organisations.
Therefore it is a fairly simple process for authentication. 
Below is an example.





Cloud Storage:

FireBase Provides Free Cloud Storage Where we can store our Data like Face encodings and Employee Details Securely.
Data can be Structured Easily with Collections and Documents. A Collection can contain Multiple documents and a Document can contain multiple Fields . Therefore It provides a proper hierarchy for storing related Data and Helps easily retrieve Data using Expressive Queries. 
An example of Data Heirarchy is shown Below.




Code Snippet:


The Above Code queries Image Data from Data Storage and converts them into numpy format.
The extracted Data is sent to the program for computations or recognition.

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