u | Information content is different across the process phases |
| u | many flavours of instances (as much as we have process steps?)
| u | occurance cannot finally be checked by SGML/XML parser |
u | Different data is generated in different process steps |
| u | sophisticated version control and process management |
| u | tools to merge data |
u | Not all objects exist along the process chain |
| u | handle broken links |
| u | establish links automatically by knowing the semantics |
| u | convert to standard SGML style for exchange |
u | Global data models of tools or processes must be mappeded |
| u | export capabilities are determined by the internal data model |
| u | allow multiple global data models |
| u | harmonize data models on SGML level |