SQLite Database File Format Specification (Version 3.0.0+)
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Summary
This document defines the on-disk database file format used by all releases of SQLite since version 3.0.0 (2004-06-18). It describes the structure of the main database file, the rollback journal used during transactions, and the write-ahead log (WAL) mode. It also covers the concept of "hot journals" which occur when a crash happens before a transaction completes.
Key quotes
· 3 pulledThe complete state of an SQLite database is usually contained in a single file on disk called the 'main database file'.
During a transaction, SQLite stores additional information in a second file called the 'rollback journal', or if SQLite is in WAL mode, a write-ahead log file.
If the application or host computer crashes before the transaction completes, then the rollback journal or write-ahead log contains...
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