Week 6: cloud computing and relational databases

In this lecture, Mr Haidar has covered the topic of cloud computing along with databases.

Software as a service

A web service model for supporting and managing information system needs:

·         Managing and performing business process using online service than traditional application from a PC

·         Over 90% had a ROI in the 1^st of year and around 36% broke even in year 1

Benefits:

·         Paid by subscription basis

·         Installation and maintenance costs are outsourced

·         Money saving on client side

Utility computing

Organisations rent resources from other providers.

·         Subscription based: monthly payment

·         Scalability benefits: change to demands

·         Rent resources

·         No initial cost

IS infrastructure trend: cloud computing

Due to the increase in bandwidth and virtualisation:

·         A model for enabling convenient access to shared resources

The cloud

·         Google

·         Ecommerce

IS infrastructure trend 2 CC

CC characteristics:

·         On demand service

·         Rapid elasticity

·         Resource pooling

·         Measured service

Management problems with CC:

·         Scalability

·         Viability

·         Diversity of offerings

·         Support policies

·         Availability

·         Security and privacy

·         Openness

Advanced cloud applications:

·         Complex tasks problems

·         Large computing tasks

Advanced cloud applications: content delivery networks

·         Edge computing

·         Moving processing and data storage

·         Improve performance

Advanced cloud applications: green computing

Driving forces

·         Power bills

·         Reputation

·         Culture

Approaches

·         Cloud computing

·         Less printing

·         Power management software

Relational database: organising data