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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Highly Reliable
The purpose of a database is to keep your data safe and organized. The SQLite development team is aware that nobody will use a database product that has a reputation for being buggy or unreliable. To maintain a high level of reliability, the core SQLite library is aggressively tested before each release.
In full, the standard SQLite test suites consists of over 10 million unit tests and query tests. The “soak test,” done prior to each release, consists of over 2.5 billion tests. The suite provides 100% statement coverage and 100% branch coverage, including edge-case errors, such as out-of-memory and out-of-storage conditions. The test suite is designed to push the system to its specified limits and beyond, providing extensive coverage of both code and operating parameters.
This high level of testing keeps the SQLite bug count relatively low. No software is perfect, but bugs that contribute to actual data-loss or database corruption are fairly rare. Most bugs that escape are performance related, where the database will do the right thing, but in the wrong way, leading to longer run-times.
Strong testing also keeps backwards compatibility extremely solid. The SQLite team takes backwards compatibility very seriously. File formats, SQL syntax, and programming APIs and behaviors have an extremely strong history of backwards compatibility. Updating to a new version of SQLite rarely causes compatibility problems.
In addition to keeping the core library reliable, the extensive ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.