# Data Management (DM)
`DM` objects are used to manage communication between the algebraic structures in PETSc (`Vec` and `Mat`) and mesh data structures
in PDE-based (or other) simulations. See, for structured grids `DMDA`, for staggered grids `DMSTAG`, and for unstructured grids `DMPLEX`.
Users guide chapter: [](part_dm).
Examples
Source files
zdasubf.c
zda1f.c
zda2f.c
zda3f.c
zdacornf.c
zdaf.c
zdagetscatterf.c
zdaghostf.c
zdaindexf.c
zdaviewf.c