Data Exchange

Data Exchange

1. DATA INTERFACES

   • HOW JSON IS PRESENTED
     • Simple format using ordered lists (arrays ) and key-value pairs
     • Data transport and reconstruction through serialization and parsing
     • Variety of language libraries for serialisation and deserialisation
     • Format that is legible by humans, appropriate for data storage, APIs, and configuration
     • Allows for the representation of complicated data via nested structures
   • TABLES
     • <table>, <tr>, <th>, <td>
     • Data visualisation methods, responsive design, accessibility
     • JavaScript libraries improve visualisation and interactivity
   • SAMPLE DATA
     • Data production for testing and development is automated by tools
     • Anonymous data safeguards privacy; applications from the actual world show this
     • Consistency, repeatability and collaboration are guaranteed by version control
     • Diverse datasets capture real-world sitations
   • HTML & CSS
     • Semantic makeup improves SEO and accessibility
     • CSS selectors apply style to particular HTML elements
     • Frameworks offer pre-made components and styles to ensure uniformity

2. How JSON is structured from API

   • Keys
     • Individual numbers assigned to every value
     • Most often strings, although they can also be integers
     • Keys provide users access to certain values inside JSON objects
   • Values
     • JSON data related to keys
     • May consist of objects, booleans, strings, integers, or arrays
     • Values are what provide the real data that is kept in JSON
   • Arrays
     • Square brackets {[]} surround an ordered list of values
     • Any data type, even those of other arrays, may be the values inside of arrays
     • Collections of data may be represented in JSON using arrays

3. Data Specification

   • Data Types
     • Indicates the kinds of data that are kept in JSON
     • Array, object, boolean, integers, string are examples of common data types
     • Specifies the interpretation and mainpulation of the data
   • Data Length
     • Indicates the longest amount of data that is permitted
     • Indicates the maximum number of characters or numbers that are allowed
     • Prevents data overflow and guarantees consistency
   • Constraints/Validation
     • Regulations limiting the values that can be assigned to certain keys
     • Assures correctness and integrity of data
     • Required fields, range restrictions, and format requirements are a few examples

4. Digital Methods of Exchanging Data

   • Protocols
     • HyperText Transfer Protocol (HTTP)
     • Transmission Control Protocol/Internet Protocol (TCP/IP)
     • File Transfer Protocol (FTP)
   • REST principles
     • Representational State Transfer
     • Communication without states
     • Utlilising the GET, POST, PUT, and DELETE standard HTTP methods
   • JSON + XML
     • JSON: A simple, lightweight data format
     • XML: Format used for structured data
     • Applies to both APIs and web services
     • Developer preference and use case determines the choice between formats