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+<title>Database Connection Handle</title>
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+<!-- keywords: {database connection} {database connections} sqlite3 -->
+<div class=nosearch>
+<a href="intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Database Connection Handle</h2>
+</div>
+<blockquote><pre>
+typedef struct sqlite3 sqlite3;
+</pre></blockquote>
+<p>
+Each open SQLite database is represented by a pointer to an instance of
+the opaque structure named "sqlite3". It is useful to think of an sqlite3
+pointer as an object. The <a href="../c3ref/open.html">sqlite3_open()</a>, <a href="../c3ref/open.html">sqlite3_open16()</a>, and
+<a href="../c3ref/open.html">sqlite3_open_v2()</a> interfaces are its constructors, and <a href="../c3ref/close.html">sqlite3_close()</a>
+and <a href="../c3ref/close.html">sqlite3_close_v2()</a> are its destructors. There are many other
+interfaces (such as
+<a href="../c3ref/prepare.html">sqlite3_prepare_v2()</a>, <a href="../c3ref/create_function.html">sqlite3_create_function()</a>, and
+<a href="../c3ref/busy_timeout.html">sqlite3_busy_timeout()</a> to name but three) that are methods on an
+sqlite3 object.
+</p><p>3 Constructors:
+ <a href="../c3ref/open.html">sqlite3_open()</a>,
+<a href="../c3ref/open.html">sqlite3_open16()</a>,
+<a href="../c3ref/open.html">sqlite3_open_v2()</a></p>
+<p>2 Destructors:
+ <a href="../c3ref/close.html">sqlite3_close()</a>,
+<a href="../c3ref/close.html">sqlite3_close_v2()</a></p>
+<p>76 Methods:
+<div class='columns' style='columns: 17em auto;'>
+<ul style='padding-top:0;'>
+<li><a href='../c3ref/autovacuum_pages.html'>sqlite3_autovacuum_pages</a></li>
+<li><a href='../c3ref/blob_open.html'>sqlite3_blob_open</a></li>
+<li><a href='../c3ref/busy_handler.html'>sqlite3_busy_handler</a></li>
+<li><a href='../c3ref/busy_timeout.html'>sqlite3_busy_timeout</a></li>
+<li><a href='../c3ref/changes.html'>sqlite3_changes</a></li>
+<li><a href='../c3ref/changes.html'>sqlite3_changes64</a></li>
+<li><a href='../c3ref/collation_needed.html'>sqlite3_collation_needed</a></li>
+<li><a href='../c3ref/collation_needed.html'>sqlite3_collation_needed16</a></li>
+<li><a href='../c3ref/commit_hook.html'>sqlite3_commit_hook</a></li>
+<li><a href='../c3ref/create_collation.html'>sqlite3_create_collation</a></li>
+<li><a href='../c3ref/create_collation.html'>sqlite3_create_collation16</a></li>
+<li><a href='../c3ref/create_collation.html'>sqlite3_create_collation_v2</a></li>
+<li><a href='../c3ref/create_function.html'>sqlite3_create_function</a></li>
+<li><a href='../c3ref/create_function.html'>sqlite3_create_function16</a></li>
+<li><a href='../c3ref/create_function.html'>sqlite3_create_function_v2</a></li>
+<li><a href='../c3ref/create_module.html'>sqlite3_create_module</a></li>
+<li><a href='../c3ref/create_module.html'>sqlite3_create_module_v2</a></li>
+<li><a href='../c3ref/create_function.html'>sqlite3_create_window_function</a></li>
+<li><a href='../c3ref/db_cacheflush.html'>sqlite3_db_cacheflush</a></li>
+<li><a href='../c3ref/db_config.html'>sqlite3_db_config</a></li>
+<li><a href='../c3ref/db_filename.html'>sqlite3_db_filename</a></li>
+<li><a href='../c3ref/db_mutex.html'>sqlite3_db_mutex</a></li>
+<li><a href='../c3ref/db_name.html'>sqlite3_db_name</a></li>
+<li><a href='../c3ref/db_readonly.html'>sqlite3_db_readonly</a></li>
+<li><a href='../c3ref/db_release_memory.html'>sqlite3_db_release_memory</a></li>
+<li><a href='../c3ref/db_status.html'>sqlite3_db_status</a></li>
+<li><a href='../c3ref/drop_modules.html'>sqlite3_drop_modules</a></li>
+<li><a href='../c3ref/enable_load_extension.html'>sqlite3_enable_load_extension</a></li>
+<li><a href='../c3ref/errcode.html'>sqlite3_errcode</a></li>
+<li><a href='../c3ref/errcode.html'>sqlite3_errmsg</a></li>
+<li><a href='../c3ref/errcode.html'>sqlite3_errmsg16</a></li>
+<li><a href='../c3ref/errcode.html'>sqlite3_error_offset</a></li>
+<li><a href='../c3ref/errcode.html'>sqlite3_errstr</a></li>
+<li><a href='../c3ref/exec.html'>sqlite3_exec</a></li>
+<li><a href='../c3ref/errcode.html'>sqlite3_extended_errcode</a></li>
+<li><a href='../c3ref/extended_result_codes.html'>sqlite3_extended_result_codes</a></li>
+<li><a href='../c3ref/file_control.html'>sqlite3_file_control</a></li>
+<li><a href='../c3ref/free_table.html'>sqlite3_free_table</a></li>
+<li><a href='../c3ref/get_autocommit.html'>sqlite3_get_autocommit</a></li>
+<li><a href='../c3ref/free_table.html'>sqlite3_get_table</a></li>
+<li><a href='../c3ref/interrupt.html'>sqlite3_interrupt</a></li>
+<li><a href='../c3ref/last_insert_rowid.html'>sqlite3_last_insert_rowid</a></li>
+<li><a href='../c3ref/limit.html'>sqlite3_limit</a></li>
+<li><a href='../c3ref/load_extension.html'>sqlite3_load_extension</a></li>
+<li><a href='../c3ref/next_stmt.html'>sqlite3_next_stmt</a></li>
+<li><a href='../c3ref/overload_function.html'>sqlite3_overload_function</a></li>
+<li><a href='../c3ref/prepare.html'>sqlite3_prepare</a></li>
+<li><a href='../c3ref/prepare.html'>sqlite3_prepare16</a></li>
+<li><a href='../c3ref/prepare.html'>sqlite3_prepare16_v2</a></li>
+<li><a href='../c3ref/prepare.html'>sqlite3_prepare16_v3</a></li>
+<li><a href='../c3ref/prepare.html'>sqlite3_prepare_v2</a></li>
+<li><a href='../c3ref/prepare.html'>sqlite3_prepare_v3</a></li>
+<li><a href='../c3ref/preupdate_blobwrite.html'>sqlite3_preupdate_blobwrite</a></li>
+<li><a href='../c3ref/preupdate_blobwrite.html'>sqlite3_preupdate_count</a></li>
+<li><a href='../c3ref/preupdate_blobwrite.html'>sqlite3_preupdate_depth</a></li>
+<li><a href='../c3ref/preupdate_blobwrite.html'>sqlite3_preupdate_hook</a></li>
+<li><a href='../c3ref/preupdate_blobwrite.html'>sqlite3_preupdate_new</a></li>
+<li><a href='../c3ref/preupdate_blobwrite.html'>sqlite3_preupdate_old</a></li>
+<li><a href='../c3ref/profile.html'>sqlite3_profile</a></li>
+<li><a href='../c3ref/progress_handler.html'>sqlite3_progress_handler</a></li>
+<li><a href='../c3ref/commit_hook.html'>sqlite3_rollback_hook</a></li>
+<li><a href='../c3ref/set_authorizer.html'>sqlite3_set_authorizer</a></li>
+<li><a href='../c3ref/set_last_insert_rowid.html'>sqlite3_set_last_insert_rowid</a></li>
+<li><a href='../c3ref/system_errno.html'>sqlite3_system_errno</a></li>
+<li><a href='../c3ref/table_column_metadata.html'>sqlite3_table_column_metadata</a></li>
+<li><a href='../c3ref/total_changes.html'>sqlite3_total_changes</a></li>
+<li><a href='../c3ref/total_changes.html'>sqlite3_total_changes64</a></li>
+<li><a href='../c3ref/profile.html'>sqlite3_trace</a></li>
+<li><a href='../c3ref/trace_v2.html'>sqlite3_trace_v2</a></li>
+<li><a href='../c3ref/txn_state.html'>sqlite3_txn_state</a></li>
+<li><a href='../c3ref/unlock_notify.html'>sqlite3_unlock_notify</a></li>
+<li><a href='../c3ref/update_hook.html'>sqlite3_update_hook</a></li>
+<li><a href='../c3ref/wal_autocheckpoint.html'>sqlite3_wal_autocheckpoint</a></li>
+<li><a href='../c3ref/wal_checkpoint.html'>sqlite3_wal_checkpoint</a></li>
+<li><a href='../c3ref/wal_checkpoint_v2.html'>sqlite3_wal_checkpoint_v2</a></li>
+<li><a href='../c3ref/wal_hook.html'>sqlite3_wal_hook</a></li>
+</ul>
+</div>
+</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>
+