August 2010
Intermediate to advanced
526 pages
23h 39m
English
Content preview from Using SQLiteBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Single File Database
SQLite packages the entire database into a single file. That single file contains the database layout as well as the actual data held in all the different tables and indexes. The file format is cross-platform and can be accessed on any machine, regardless of native byte order or word size.
Having the whole database in a single file makes it trivial to create, copy, or back up the on-disk database image. Whole databases can be emailed to colleagues, posted to a web forum, or checked into a revision control system. Entire databases can be moved, modified, and shared with the same ease as a word-processing document or spread-sheet file. There is no chance of a database becoming corrupt or unavailable because one of a dozen files was accidentally moved or renamed.
Perhaps most importantly, computer users have grown to expect that a document, project, or other “unit of application data” is stored as a single file. Having the whole database in a single file allows applications to use database instances as documents, data stores, or preference data, without contradicting customer expectations.
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