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Databases - Coggle Diagram
Databases
DBLC
Testing and evaluation
Operation
Implementation
Maintenance
Database design
Most NB step in BBL
Initial study
Web
Middleware / Database connectivity
Client side
Server side
Application servers - Access to multiple servers
XML - gives meaning to HTML
Cloud services
Iaas
Paas
Saas
Who? - Database adminstrators
technical skills
functional organization
managerial skills
functions
programming standards
executes plans to reach goals
enforces policies and standards
control and supervision
short term daily operations
Narrow scope
Data
Raw material used to produce information
Information is exceptionally important in business
Types
Distributed
Types
Heterogenous
Homogenous
Multiple databases
Date's 12 Commandments
Centralised - stored, located and maintenance all at a single site
Concurrency control
serialisabilty
Transaction management
locking
scheduler
problems
uncommitted data
inconsistent retrievals
lost updates
Where? Data warehousing
why?
competitive advanatge
DSS
decision making
how?
DSS - Decision support systems