Small. Fast. Reliable.
Choose any three.
Choose any three.
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The Advantages Of Flexible Typing
(flextypegood.html)
4.3. Rigid type enforcement prevents data pollution
Some people contend that if you have rigorous constraints on the
schema, and especially strict enforcement of column datatypes, this
will help prevent incorrect data from being added to the database.
This is not true. It is true that type ...
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C/C++ Interface For SQLite Version 3 (old)
(capi3.html)
... SQLITE_SCHEMA 17 /* The database schema changed */
#define SQLITE_TOOBIG 18 /* Too much data for one row of a table */
#define SQLITE_CONSTRAINT 19 /* Abort due to contraint violation */
#define SQLITE_MISMATCH 20 /* Data type mismatch */
#define SQLITE_MISUSE 21 /* Library used incorrectly */
#define SQLITE_NOLFS ...
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SQLite Changes From Version 3.4.2 To 3.5.0
(34to35.html)
... The constraint was that the same database connection
could not be used in two separate threads at once. SQLite version 3.5.0
relaxes this constraint.
In order to allow multiple threads to use the same database connection
at the ...
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SQLite FTS3 and FTS4 Extensions
(fts3.html)
1.2. Creating and Destroying FTS Tables
... The same applies to any constraints specified along with an
FTS column name - they are parsed but not used or recorded by the system
in any way.
-- Create an FTS table named "data" with one column - "content":
CREATE VIRTUAL TABLE ...
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The Next-Generation Query Planner
(queryplanner-ng.html)
3.2. Complications
... SQLite makes guesses for the cost of running a loop based on
the availability of indexes and constraints found in the WHERE
clause. These guesses are usually pretty good, but they can sometimes be
off. Using the ANALYZE command to ...
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SQLite As An Application File Format
(appfileformat.html)
... An SQLite database can have dozens
or hundreds or thousands of different tables, with dozens or
hundreds or thousands of fields per table, each with different datatypes
and constraints and particular meanings, all cross-referencing each other,
appropriately and automatically ...
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Vulnerabilities
(cves.html)
2.1. A separate SQL injection vulnerability is usually required
... This is done inside a sandbox with tightly controlled constraints on
resources, lest the SQL script try to soak up all available memory
or CPU cycles in a denial-of-service attack. Chrome and Safari
have the infrastructure in place ...
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Many Small Queries Are Efficient In SQLite
(np1queryprob.html)
4. The Need For Over 200 SQL Statements Per Webpage
... This "timeline" query demonstrates that SQLite can easily process complex
relational database queries involving multiple tables, subqueries, and
complex WHERE clause constraints, and it can make effective use of indexes
to solve the queries with minimal disk I/O.
Following ...
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What If OpenDocument Used SQLite?
(affcase1.html)
... We could continue to enhance the schema with new tables, with indexes
added for performance, with triggers and views for programming convenience,
and constraints to enforce consistency of content even in the face of
programming errors. Further enhancement ideas include ...
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Write-Ahead Logging
(wal.html)
5. Read-Only Databases
... This constraint was relaxed beginning with
SQLite version 3.22.0 (2018-01-22).
On newer versions of SQLite,
a WAL-mode database on read-only media, or a WAL-mode database that lacks
write permission, can still be read ...
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