==== Data Layer ====

=== What is the data layer? ===

The data layer is the layer that holds observable data. 

-- These are observations

-- It is a MySQL database

-- There isn't any interpretation

=== How to connect to the MySQL database ==

[[pluginto:mysql_database|Connecting to the MySQL database]]

=== Database structure ===

[[dictionary:table_descriptions|Explanation of tables and data dictionary]]