Data exchange over internet (XML vs JSON)

Data Exchange Over Internet
JSON vs XML
University of Engineering and Technology,
Lahore

• Introduction
• Syntax
• Tree
• Namespace
• Datatypes Supported
• Parser
• Data Access
• XPath
• XQuery
• Introduction
• Syntax
• Datatypes Supported
• Arrays
• Objects
• Parser
• Data Access

JSON
Shahzaib Tariq
2018-CS-130

What is JSON?
Let’s get familiar with JavaScript Object Notation
1

 JSON is a format/syntax
for storing and
exchanging data.
 JSON is text, written with
JavaScript object
notation.
Breif Description
 JSON is a lightweight
data-interchange format
 JSON is "self-describing"
and easy to understand
 JSON is language
independent *

 Data is in name/value
pairs
 Data is separated by
commas
 Curly braces hold objects
 Square brackets hold
arrays
Syntax

 Data Types JSON support:
• string
• number
• object (JSON object)
• array
• boolean
Data-Type
• date
• time
• null

 JSON objects are
surrounded by curly
braces { }.
 JSON objects are written
in key/value pairs.
 Keys must be strings, and
values must be a valid
JSON data type.
 Keys and values are
separated by a colon.
DataTypes - Objects
 Each key/value pair is
separated by a comma.

 Arrays in JSON are almost
the same as arrays in
JavaScript.
 In JSON, array values
must be of type string,
number, object, array,
boolean or null.
DataTypes - Arrays

 When receiving data
from a web server, the
data is always a string.
 Parse the data with
JSON.parse(), and the
data becomes a
JavaScript object.
Parser

XML
Ghufran Jaleel
2018-CS-126

What is XML?
Let’s get familiar with Extensible Markup
Language
2

 XML is a markup
language much like
HTML
 XML was designed to
store and transport data
 HTML was designed to
display data elegently
Breif Description
 XML Separates Data from
Presentation
 XML is Often a
Complement to HTML
 XML Separates Data from
HTML

 XML documents are
formed as element trees
 An XML tree starts at a
root element and
branches from the root
to child elements
 All elements can have
sub elements (child
elements)
Syntax - Tree

 XML may have conflict in
tags - They are defined
by developer
 When using prefixes in
XML, a namespace for
the prefix must be
defined.
 The namespace
declaration has the
following syntax.
xmlns:prefix="URI".
Syntax - Namespace

 Primitive types XML
support:
• string
• decimal
• integer
• boolean
• date
• time
Data-Type
 Supports many complex
data types including:
• charts
• graphs
• images

 Before an XML document
can be accessed, it must
be loaded into an XML
DOM object.
 All modern browsers
have a built-in XML
parser that can convert
text into an XML DOM
object.
Parser

 XQuery is the language
for querying XML data
 XQuery for XML is like
SQL for databases
 XQuery is built on XPath
expressions
 XQuery is supported by
all major databases
Data Access - XQuery

Conclusion
M. Wajahat Shahid
2018-CS-113

Performance Comparision
Comparision of Features and Usage
3

Features of JSON
⬥ Usage is Straight-Forward
⬥ No need to create a Mapping
⬥ Better Performance
⬥ Clean Data Format
⬥ No Dependency

Features of XML
⬥ Styled Processed Data can be Displayed by
XSLT
⬥ Meta-Data can also be defined (DTD)
⬥ Provide Namespace for Accurate Results
⬥ Used in Information Exchanges like b2b
transactions and b2c Transactions
⬥ Automated Tasks
⬥ InBuilt Error Handling

 Easy to grasp
 Creation and Manipulation
are Easy and Light-Weight
 All major languages
frameworks support JSON
 Transmission and
Serialization of the
Structured Data are done
using a Network Connection
Pros and Cons of JSON
 JSON offers poor
Extensibility as no
Namespace Support
 State Can not be
Transferred

 XML exchanges Data
between different
platforms. So, it connects
different Systems and
Applications
 XML Separates the Data
from HTML
 XML Simplifies the Platform
Change Process
 Secure Data Transfer
Pros and Cons of XML
 XML requires processing
application
 XML syntax can
sometimes be confusing
as it is similar to other
alternatives
 No intrinsic/primitive
data type support
 The XML syntax is
redundant

 Scripting Language
 Document-Oriented
 Data is stored as Tree
 Bulky and Slow
 Stored data can be
Processed Natively
 Comments are Valid
 XML supports UTF-8 and
UTF-16 encodings
Which is used Where?
 File Format based on
Javascript
 Data-Oriented
 Key-Value Pair
 Fast and Reliable
 No Processing is Avialable
 Supports no Comments
 JSON supports UTF as well as
ASCII encodings.

 Saperate Tags are used for
each Item to use Array
 XML can display with
Elegent Styling
 JSON is supported by most
browsers
 Supports Statefull Data
Exchange
 Mostly used in SOAP APIs
Which is used Where?
 Support Array as in
JavaScript
 JSON has no display
capabilities
 Cross-browser XML parsing
can be tricky
 State can not be preserved
in JSON
 Rest APIs mainly has JSON
response

 Simple Object Access
Protocol
 Data Transfer between
Programs built on different
Platforms and Programming
Languages
 SOAP is it’self a Protocol
 SOAP only works with XML
A Bird-Eye Overview
 Representational State
Transfer
 Deals with Files, Media
Components, or even Objects
on a Particular Hardware
Device
 Use HTTP verbs of GET, POST,
PUT and DELETE for working
 Plain Text, XML, HTML and
JSON. Rest APIs mainly has
JSON response

Data exchange over internet (XML vs JSON)

Recommended

More Related Content

What's hot (20)

Similar to Data exchange over internet (XML vs JSON) (20)

Recently uploaded (20)

Data exchange over internet (XML vs JSON)

Editor's Notes