--- title: "Schema" slug: "common-apidatatype-csschema" updated: 2026-09-17T09:25:03Z published: 2026-09-17T09:25:03Z canonical: "api.ncloud-docs.com/common-apidatatype-csschema" --- > ## Documentation Index > Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # Schema Available in Classic This is the search settings information. ## Syntax The syntax is as follows. ``` private String primarySectionName; private List
sections = new ArrayList
(); private List indexes = new ArrayList(); ``` ## Field The following describes the fields. | Field | Type | Required | Description | | --- | --- | --- | --- | | `primarySectionName` | String | Required | Main section (Document Key) - 3 to 20 characters, including English letters, numbers, and the special character "_", and must begin with an English letter or special character "_" | | `sections` | List<[Section](/docs/en/common-apidatatype-cssection)> | Required | Section information list | | `indexes` | List<[Index](/docs/en/common-apidatatype-csindex)> | Required | Index information list |