SQLite Definitive Guide
http://bbs.aardio.com/doc/sqlite/definitive%20guide.htm
http://bbs.aardio.com/doc/sqlite/definitive%20guide.htm
Getting started with analysis of three Core Overview https://www.cnblogs.com/hustcat/archive/2009/02/17/1392746.html
https://www.oracle.com/technical-resources/articles/database/oracle-berkeley-db-sql-api.html
https://www.sqlite.org/vfs.html
https://www.sqlite.org/vfs.html
The SQLite OS Interface or "VFS"
search keyword
sqlite B-Tree
sqlite3_stmt