1. Original schema

1.1. Experiment database

1.2. List of available experiments (separate database schema)

2. Refined schema (step 1)

2.1. Experiment database

• there is no intervals table anymore
• redundant columns in entry table where removed
• scheduler  table no longer keeps info related to MDSPlus  based notation of source data
• entry_data contains column for holding complex data

3. Refined schema (step 2)

3.1. Experiment database

• complex types are stored as real and imaginary
• variables contain ids  in the name instead of cpo 

4. Refined schema (step 3)

4.1. Experiment database

• scheduler table is now called request
• all the plural names of tables were changed to singular ones
• all the indexes are now unified (naming convention is the same across all the indexes)