Builder

The schema fields for the table. Each field defines a column in the table, including its name, type, and whether it is required.

A list of field IDs that are used as the identifier fields for the table. Identifier fields uniquely identify a row in the table.

An optional unique identifier for the schema. Schema IDs are used by Apache Iceberg to track schema evolution.

The type of the top-level schema, which is always a struct type as defined in the Apache Iceberg specification. This value must be struct.