Write-Ahead Logging
1. Overview The default method by which SQLite implements atomic commit and rollback is a rollback journal. Beginning with version 3.7.0 (2010-07-21), a new "Write-Ahead Log" option (hereafter referred to as "WAL") is available. There are advantages and disadvantages to using WAL instead of a rollback journal. Advantages include: WAL is significantly faster in most scenarios. WAL provides more con
SQLite Foreign Key Support
Overview This document describes the support for SQL foreign key constraints introduced in SQLite version 3.6.19 (2009-10-14). The first section introduces the concept of an SQL foreign key by example and defines the terminology used for the remainder of the document. Section 2 describes the steps an application must take in order to enable foreign key constraints in SQLite (it is disabled by defa
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