Digital Methods of Exchanging Data

Digital Methods of Exchanging Data

1. Data Interface

   • JSON
     • Tables
       • Row
       • Column
       • Cell
       • Headings
     • Sample Data
   • Front End Interface
     • HTML
       • Hypertext Markup Language, a standardized system for tagging text files to achieve font, colour, graphic, and hyperlink effects on World Wide Web pages.
     • CSS
       • CSS stands for Cascading Style Sheets, it describes how HTML elements are to be displayed on screen, paper, or in other media, saves a lot of work. It can control the layout of multiple web pages all at once. External stylesheets are stored in CSS files.

2. Data Structure

   • Key
     • String enclosed by quotation marks ("")
   • Value
     • String
       • Text
     • Array
       • Values
     • Boolean
       • True or False
     • Number
       • Integer
     • Object
       • Array of key/value pairs
   • Classification of Data Structure
     • Linear Data Structure
     • Non-Linear Data Structure
     • Dynamic Data Structure
     • Static Data Structure

3. Data Specifications

   • XML
     • boolean
     • integer
     • decimal
     • string
     • data
   • JSON
     • array
     • boolean
     • null
     • string
     • integer
   • Data Types
     • Integer
     • character
     • string
     • float
     • boolean
   • Data validation
     • Data is checked against constraints to ensure data is valid

4. Ways of Exchanging Data

   • REST Principles
     • REST is a set of principles that define how Web standards, such as HTTP and URIs, are supposed to be used.
   • JSON
     • JSON stands for JavaScript Object Notation. JSON is a text format for storing and transporting data. JSON is "self-describing" and easy to understand
   • XML
     • XML stands for eXtensible Markup Language. XML is a markup language much like HTML. XML was designed to store and transport data XML was designed to be self-descriptive

5. User Interface

   • Command line interface (CLI)
     • The user types commands or instructions using a keyboard.
   • Graphical user interface (GUI)
     • The user interacts with graphical icons, buttons, menus, and windows using a mouse, touchpad, or touchscreen.
   • Menu driven interface (MDI)
     • The user selects options from a list of choices using a keyboard, mouse, or touchscreen.
   • Form based interface (FBI)
     • The user fills in fields or boxes with data using a keyboard, mouse, or touchscreen.
   • Natural language interface (NLI)
     • The user communicates with the computer using spoken or written language.