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Database Design
The Database Design Process
• Define the parameters of the system/project
• Define how the database will be used
• Define the logical data model
• Define the schema
• Define the user interface
Parameters of the system/project
• What is the scope
– Design and development of databases is an area where changes can have a large impact
• What is the goal
• What acceptance measurements wil be used
Scope of database
• Take an online book seller as an example of a database development project. ...
Goals
• Functional requirements are not goals
• Goals need to be measureable
• The goals for the database must be realistic
• Goals can change and this could cause a major schema change
Cost
• The cost to the customer is not restricted to the development costs
• There are costs associated with
– Data Storage
– Database backup strategy
– Replication
– Performance
• A database system runs on a system and needs resources !
Approximate Word count = 672
Approximate Pages = 2.7
(250 words per page double spaced)
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