Database specification#

This is writing about specification of generated database.

Base#

Using SQLite and FTS5 extension. Details are described in SQLite website.

atsphinx-sqlite3fts run these strategy.

  • Use trigram tokenizer to search Japanese text (not work with unicode61).

  • Split document table and searching virtual table (document has page that is not target of search).

Tables#

atsphinx-sqlite3fts use peewee to manage database schemas.

document table#

This table contains all of property for refer to documents.

section table#

This table contains all of property for refer to section of documents.

content table#

This table is registered only targets of full-text searching. Currently, this contains title and body of documents.

body is plain text to pick all text contents from doctree.

Relation#

  • section.document_id is as foreign key to document.id.

  • document-fts.rowid is as foreign key to section.id.

You can use JOIN statement some tables.