Sqlite supports integrity checks since at least version 3.7.10, so CSqliteSchema.checkIntegrity() should be implemented. Actually the fixture manager may fail to load fixtures saying "foreign key constraint failed".
Enh #1447: CSqliteSchema: added enabling/disabling integrity check fo…
…r sqlite. PR #1449.
@gleb-sternharz, thanks for proposing and fixing this! :-)