Impedance Mismatch
Factor
J2EE
Relational Databases
Logical Data
Representation
Objects, methods,
inheritance
Tables, SQL, stored procedures
Scale
Hundreds of megabytes
Gigabytes, terabytes
Relationships
Memory references
Foreign keys
Uniqueness
Internal object id
Primary keys
Key Skills
Java development,
object modeling
SQL, Stored Procedures, data
management
Tools
IDE, Source code
management, Object
Modeler
Schema designer, query
manager, performance profilers,
database configuration