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+<title>Name Of The Folder Holding Database Files</title>
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+<!-- keywords: sqlite3_data_directory -->
+<div class=nosearch>
+<a href="intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Name Of The Folder Holding Database Files</h2>
+</div>
+<blockquote><pre>
+SQLITE_EXTERN char *sqlite3_data_directory;
+</pre></blockquote>
+<p>
+If this global variable is made to point to a string which is
+the name of a folder (a.k.a. directory), then all database files
+specified with a relative pathname and created or accessed by
+SQLite when using a built-in windows <a href="../c3ref/vfs.html">VFS</a> will be assumed
+to be relative to that directory. If this variable is a NULL
+pointer, then SQLite assumes that all database files specified
+with a relative pathname are relative to the current directory
+for the process.  Only the windows VFS makes use of this global
+variable; it is ignored by the unix VFS.</p>
+
+<p>Changing the value of this variable while a database connection is
+open can result in a corrupt database.</p>
+
+<p>It is not safe to read or modify this variable in more than one
+thread at a time.  It is not safe to read or modify this variable
+if a <a href="../c3ref/sqlite3.html">database connection</a> is being used at the same time in a separate
+thread.
+It is intended that this variable be set once
+as part of process initialization and before any SQLite interface
+routines have been called and that this variable remain unchanged
+thereafter.</p>
+
+<p>The <a href="../pragma.html#pragma_data_store_directory">data_store_directory pragma</a> may modify this variable and cause
+it to point to memory obtained from <a href="../c3ref/free.html">sqlite3_malloc</a>.  Furthermore,
+the <a href="../pragma.html#pragma_data_store_directory">data_store_directory pragma</a> always assumes that any string
+that this variable points to is held in memory obtained from
+<a href="../c3ref/free.html">sqlite3_malloc</a> and the pragma may attempt to free that memory
+using <a href="../c3ref/free.html">sqlite3_free</a>.
+Hence, if this variable is modified directly, either it should be
+made NULL or made to point to memory obtained from <a href="../c3ref/free.html">sqlite3_malloc</a>
+or else the use of the <a href="../pragma.html#pragma_data_store_directory">data_store_directory pragma</a> should be avoided.
+</p><p>See also lists of
+  <a href="objlist.html">Objects</a>,
+  <a href="constlist.html">Constants</a>, and
+  <a href="funclist.html">Functions</a>.</p>
+