Gramps Data Model

Gramps data model (v5.2)

Gramps uses the pickle module to serialise object hierarchies and store them in the database.

Details of the pickle module can be found here:

• https://docs.python.org/3/library/pickle.html

The Places Model Enhancements planned for v5.3 are expected to have deeper changes. One target for that Gramps Proposal includes this documentation.

Primary objects are coloured blue. Secondary objects are coloured black. The dotted lines enclose object hierarchies that are stored in the database tables.

See also

• Programmer's Introduction to the Gramps database API
  • 4.1 version of this Gramps Data Model (2014)
  • UML (svg) diagram for Gramps 4.1.x API
    Created using the following PyLint command: pyreverse -A -S $HOME/gramps/tree/master/gramps/gen/lib/*.py -o jpeg
• Gramps data model - discussion
• GEPS_013: Gramps Django Webapp:Model overview
• 10851 : Gramps Data Model - Polish Version - Gramps 5.0.0
• More graphs available, see posts on discourse.
• History of Gramps
• Database formats