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W.D.D. Analysis and Design (Analysis (Development Life Cycle (Design,…
W.D.D. Analysis and Design
Analysis
End User Requirements
The tasks that end-users need to be able to carry out
Functional Requirements
processes that the website must be able to carry out
interaction with databases/information that the website needs to have access to in order to function properly
Development Life Cycle
Design
Implementation
Analysis
Evaluation
Planning
Maintenance
Navigation
Structures
Linear
Heirarchical
Wireframing
Important Inclusions
hyperlinks
internal
external
absolute
examples:
http://www.mysite.com
http://www.mysite.com/graphics/image.png
http://www.mysite.com/help/articles/how-do-i-set-up-a-webpage.html
relative
examples:
/help/articles/how-do-i-set-up-a-webpage.html
/graphics/image.png
index.html
MUST link to pages on the same server
images
text area
video
audio controls
INCLUDE: file format, size, color, alignment, bg color, height, width, etc.
Low fidelity prototype
more detailed paper based version of the wireframe possibly inc. sketches of images
MUST consider benefits and costs of this
A graphical design that shows the intended user interface and page layout prior to implementation
Legal Implications
Copyright Designs and Patents Act (1988)
Web development needs to consider the copyright status of the following elements of a webpage:
audio
video
graphics
text
Media Files
Compression
Lossy
Lossless
MUST consider costs & benefits
Images
GIF
transparency
supported
colour depth
24-bit
animation
not supported unless MPN APNG
compression
Lossless
PNG
transparency
supported
colour depth
8-bit
animation
supported
compression
lossless
JPEG
transparency
not supported
colour depth
24-bit
animation
not supported
compression
Lossy
Audio
MP3
file size
no limit
sampling rate
44.1KHz to 48KHz
can affect file size
quality
depends on compression
compression
lossy
WAV
file size
4 GiB max
sampling rate
44.1KHz - 48KHz
can affect file size
quality
same as original sound
compression
lossless (but usually uncompressed)
