# 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).

<A HREF="../../../src/dm/tutorials/index.html">Examples</A><BR>


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Directories
<p><a href="product/index.html">product</a><br>
<a href="plex/index.html">plex</a><br>
<a href="sliced/index.html">sliced</a><br>
<a href="swarm/index.html">swarm</a><br>
<a href="composite/index.html">composite</a><br>
<a href="forest/index.html">forest</a><br>
<a href="moab/index.html">moab</a><br>
<a href="patch/index.html">patch</a><br>
<a href="shell/index.html">shell</a><br>
<a href="network/index.html">network</a><br>
<a href="redundant/index.html">redundant</a><br>
<a href="da/index.html">da</a><br>
<a href="stag/index.html">stag</a><br>