SMG IS 223 Lecture Notes - Lecture 4: Facebook Zero, Mysql

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21 Jun 2018

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oAffordances and Constraints

Affordances- relation between object/environment that affords the

opportunity for that object to perform an action

Constraints- object, factor, or subsystem that works as a bottleneck and

restricts an entity, project, or system from its goal

Ex: Facebook Zero (Facebook that doesn’t have as many extra things,

but is just used to connect with people—despite the technological

limitations)

oAffordances easy text input, always on-data connection, address book

oConstraints no graphics, low bandwidth, spotty connectivity

Open Source Software

oFreely available for use/modification

Linux and MySQL

o“Hidden support costs”

oNo vendor to call when a problem arises

Combining Customized, Open Source and Off the Shelf Systems

oOff the shelf systems can be customized

oMay interact with open source systems (MySQL can be used to store data for a

small business ERP system)

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