Schema Normalization

Schema Normalization

After fetching market data, the tool normalizes column naming to make computations consistent.

Lowercasing

The implementation lowercases columns using a rename step like:

• Date → date
• Open → open
• High → high
• Low → low
• Close → close
• Volume → volume
• Dividends → dividends
• Stock Splits → stock splits

This is why most downstream indicator expressions refer to close, high, low, and volume.

Known naming inconsistencies (indicator outputs)

Some indicator outputs currently use uppercase column names:

• ATR (ATR output)
• K and D (stochastic oscillator)

These names should be treated as canonical by downstream consumers unless the implementation changes.

Related pages:

• Pipeline
• Indicators (Overview)