KDb/TODOs/User data

Design page for task: Support for user data storage.

• Wish #??

Rationale

Among others, this feature is needed by the Remember table column widths feature.

Requirements

• Backward compatibility
  • Older Kexi versions should just ignore the data
• Per user-separation
  • How: based on user name, this implies that updates are needed when user name changes
  • How: in separate table kexi__userdata
• Backend independence - should work with the SQLite driver as well the server backends (any table-based backends)
  • How: achieved using standard db table, related to objects
• Portability to Predicate and 100% schema-compatible with Predicate
  • How: API will change but table schema will stay the same