# XMAPortal : Data Organization

## Overall data organization within the XMA Portal. <a href="#dataorganization-overalldataorganizationwithinthexmaportal." id="dataorganization-overalldataorganizationwithinthexmaportal."></a>

Each repository contains a number of studies. Each study within each repository is associated with one or more PI(s) (Principal Investigator), each study is also associated with a study leader which is usually the grad. student or post-doc. that performed the actual experiments within each study.

![](https://3579941541-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fxromm%2F-M-QHEowdmb0lV4cB-0E%2F-M-QIYTeYWmSYOVq2Gt7%2F2135767.jpg?generation=1581006094953065\&alt=media)

## Data organization within each study <a href="#dataorganization-dataorganizationwithineachstudy" id="dataorganization-dataorganizationwithineachstudy"></a>

The figure below shows the data organization within each study. A study usually contains several trials, and each trial contains files and metadata associated with that trial. A study can also contain files that are not part of a trial.

![](https://3579941541-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fxromm%2F-M-QHEowdmb0lV4cB-0E%2F-M-QIYTdmgO0ExaoOc4e%2F2135765.jpg?generation=1581006094885329\&alt=media)