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DATASOURCE.md

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DATASOURCE

this section is talking about where the data comes from in web services

Table of Contents

Web-DataSource

Data is very important in every application because we can't do anything without data! The following are some examples of data source.

From-Request

Data is not at server side but client side, so the data must be in requests

From Request Examples

  • calculate values

    • request

      GET /api/math/square? value=5

    • response

      {
  "value" : 5,
  "square" : 25
}

  • random number

    • request

      GET /api/math/random? type=int & min=0 & max=10

    • response

      {
  "random" : 6
}

From-File

Data comes from the file system at server side

From File Examples

  • file upload

    • request

      POST /api/files
[ your file data ]

    • response

      {
"id" : "ABC123"
}

  • web page

    a simple web server which serve static html pages

From-Database

Data is saved in databases and server can read these data from DBMS.

What is Database

A database is an organized collection of data

What is DBMS

A database management system ( DBMS ) is a application that interacts with the user, other applications, and the database itself to capture and analyze data

From Database Examples

  • user authentication
    1. all user data is saved in database
    • a user tries to login to a website
    • the server connect to DBMS to read corresponding user data
    • the server validates user certificate by data in database
    • the server let user in if the data is matched

From-Other-Services

Data can be fetched from other connected web services

From Other Services Examples

  • Proxy Server

References