Skill in using databases varies with the actual software used, though there is significant transfer between across different software. The selection here is simply a prototype of industry-relevant types of database software or individual products.
| identifier | caption | description |
|---|---|---|
| hierarchical | hierarchical databases | |
| XMLDBs | XML databases | |
| ZODB | the Zope object database | |
| SQLServer | Microsoft SQLServer | |
| Access | Microsoft Access | |
| MySQL | MySQL | |
| Oracle | Oracle | |
| DB2 | IBM DB2 | |
| Sybase | Sybase | |
| Paradox | Borland Paradox |