diff --git a/README.md b/README.md index dae2236b..7a2c2576 100644 --- a/README.md +++ b/README.md @@ -172,7 +172,7 @@ go build --tags "icu json1 fts5 secure_delete" | International Components for Unicode | sqlite_icu | This option causes the International Components for Unicode or "ICU" extension to SQLite to be added to the build | | Introspect PRAGMAS | sqlite_introspect | This option adds some extra PRAGMA statements. | | JSON SQL Functions | sqlite_json | When this option is defined in the amalgamation, the JSON SQL functions are added to the build automatically | -| Math Functions | sqlite_math_functions | This compile-time option enables built-in scalar math functions | +| Math Functions | sqlite_math_functions | This compile-time option enables built-in scalar math functions. For more information see [Built-In Mathematical SQL Functions](https://www.sqlite.org/lang_mathfunc.html) | | Pre Update Hook | sqlite_preupdate_hook | Registers a callback function that is invoked prior to each INSERT, UPDATE, and DELETE operation on a database table. | | Secure Delete | sqlite_secure_delete | This compile-time option changes the default setting of the secure_delete pragma.

When this option is not used, secure_delete defaults to off. When this option is present, secure_delete defaults to on.

The secure_delete setting causes deleted content to be overwritten with zeros. There is a small performance penalty since additional I/O must occur.

On the other hand, secure_delete can prevent fragments of sensitive information from lingering in unused parts of the database file after it has been deleted. See the documentation on the secure_delete pragma for additional information | | Secure Delete (FAST) | sqlite_secure_delete_fast | For more information see [PRAGMA secure_delete](https://www.sqlite.org/pragma.html#pragma_secure_delete) |