| 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 |
||