docs-xml/manpages-3/ldb.3.xml

   1 <?xml version="1.0" encoding="iso-8859-1"?>
   2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
   3 <refentry id="ldb.3">
   4
   5 <refmeta>
   6         <refentrytitle>ldb</refentrytitle>
   7         <manvolnum>3</manvolnum>
   8         <refmiscinfo class="source">Samba</refmiscinfo>
   9         <refmiscinfo class="manual">C Library Functions</refmiscinfo>
  10         <refmiscinfo class="version">3.6</refmiscinfo>
  11 </refmeta>
  12
  13 <refnamediv>
  14         <refname>ldb</refname>
  15         <refclass>The Samba Project</refclass>
  16         <refpurpose>A light-weight database library</refpurpose>
  17 </refnamediv>
  18
  19 <refsynopsisdiv>
  20         <synopsis>#include &lt;ldb.h&gt;</synopsis>
  21 </refsynopsisdiv>
  22
  23 <refsect1>
  24         <title>description</title>
  25
  26         <para>
  27 ldb is a light weight embedded database library and API. With a
  28 programming interface that is very similar to LDAP, ldb can store its
  29 data either in a tdb(3) database or in a real LDAP database.
  30         </para>
  31
  32         <para>
  33 When used with the tdb backend ldb does not require any database
  34 daemon. Instead, ldb function calls are processed immediately by the
  35 ldb library, which does IO directly on the database, while allowing
  36 multiple readers/writers using operating system byte range locks. This
  37 leads to an API with very low overheads, often resulting in speeds of
  38 more than 10x what can be achieved with a more traditional LDAP
  39 architecture.
  40         </para>
  41
  42         <para>
  43 In a taxonomy of databases ldb would sit half way between key/value
  44 pair databases (such as berkley db or tdb) and a full LDAP
  45 database. With a structured attribute oriented API like LDAP and good
  46 indexing capabilities, ldb can be used for quite sophisticated
  47 applications that need a light weight database, without the
  48 administrative overhead of a full LDAP installation.
  49         </para>
  50
  51         <para>
  52 Included with ldb are a number of useful command line tools for
  53 manipulating a ldb database. These tools are similar in style to the
  54 equivalent ldap command line tools.
  55         </para>
  56
  57         <para>
  58 In its default mode of operation with a tdb backend, ldb can also be
  59 seen as a "schema-less LDAP". By default ldb does not require a
  60 schema, which greatly reduces the complexity of getting started with
  61 ldb databases. As the complexity of you application grows you can take
  62 advantage of some of the optional schema-like attributes that ldb
  63 offers, or you can migrate to using the full LDAP api while keeping
  64 your exiting ldb code.
  65         </para>
  66
  67         <para>
  68 If you are new to ldb, then I suggest starting with the manual pages
  69 for ldbsearch(1) and ldbedit(1), and experimenting with a local
  70 database. Then I suggest you look at the ldb_connect(3) and
  71 ldb_search(3) manual pages.
  72         </para>
  73 </refsect1>
  74
  75 <refsect1>
  76         <title>TOOLS</title>
  77
  78         <itemizedlist>
  79                 <listitem><para>
  80                         <application>ldbsearch(1)</application>
  81                           - command line ldb search utility
  82                 </para></listitem>
  83
  84                 <listitem><para>
  85                         <application>ldbedit(1)</application>
  86                          - edit all or part of a ldb database using your favourite editor
  87                 </para></listitem>
  88
  89                 <listitem><para>
  90                         <application>ldbadd(1)</application>
  91                          - add records to a ldb database using LDIF formatted input
  92                 </para></listitem>
  93
  94                 <listitem><para>
  95                         <application>ldbdel(1)</application>
  96                          - delete records from a ldb database
  97                 </para></listitem>
  98
  99                 <listitem><para>
 100                         <application>ldbmodify(1)</application>
 101                          - modify records in a ldb database using LDIF formatted input
 102                 </para></listitem>
 103         </itemizedlist>
 104 </refsect1>
 105
 106 <refsect1>
 107         <title>FUNCTIONS</title>
 108
 109         <itemizedlist>
 110                 <listitem><para>
 111                         <function>ldb_connect(3)</function>
 112                          - connect to a ldb backend
 113                 </para></listitem>
 114
 115                 <listitem><para>
 116                         <function>ldb_search(3)</function>
 117                          - perform a database search
 118                 </para></listitem>
 119
 120                 <listitem><para>
 121                         <function>ldb_add(3)</function>
 122                          - add a record to the database
 123                 </para></listitem>
 124
 125                 <listitem><para>
 126                         <function>ldb_delete(3)</function>
 127                          - delete a record from the database
 128                 </para></listitem>
 129
 130                 <listitem><para>
 131                         <function>ldb_modify(3)</function>
 132                          - modify a record in the database
 133                 </para></listitem>
 134
 135                 <listitem><para>
 136                         <function>ldb_errstring(3)</function>
 137                          - retrieve extended error information from the last operation
 138                 </para></listitem>
 139
 140                 <listitem><para>
 141                         <function>ldb_ldif_write(3)</function>
 142                          - write a LDIF formatted message
 143                 </para></listitem>
 144
 145                 <listitem><para>
 146                         <function>ldb_ldif_write_file(3)</function>
 147                          - write a LDIF formatted message to a file
 148                 </para></listitem>
 149
 150                 <listitem><para>
 151                         <function>ldb_ldif_read(3)</function>
 152                          - read a LDIF formatted message
 153                 </para></listitem>
 154
 155                 <listitem><para>
 156                         <function>ldb_ldif_read_free(3)</function>
 157                          - free the result of a ldb_ldif_read()
 158                 </para></listitem>
 159
 160                 <listitem><para>
 161                         <function>ldb_ldif_read_file(3)</function>
 162                          - read a LDIF message from a file
 163                 </para></listitem>
 164
 165                 <listitem><para>
 166                         <function>ldb_ldif_read_string(3)</function>
 167                          - read a LDIF message from a string
 168                 </para></listitem>
 169
 170                 <listitem><para>
 171                         <function>ldb_msg_find_element(3)</function>
 172                          - find an element in a ldb_message
 173                 </para></listitem>
 174
 175                 <listitem><para>
 176                         <function>ldb_val_equal_exact(3)</function>
 177                          - compare two ldb_val structures
 178                 </para></listitem>
 179
 180                 <listitem><para>
 181                         <function>ldb_msg_find_val(3)</function>
 182                          - find an element by value
 183                 </para></listitem>
 184
 185                 <listitem><para>
 186                         <function>ldb_msg_add_empty(3)</function>
 187                          - add an empty message element to a ldb_message
 188                 </para></listitem>
 189
 190
 191                 <listitem><para>
 192                         <function>ldb_msg_add(3)</function>
 193                          - add a non-empty message element to a ldb_message
 194                 </para></listitem>
 195
 196
 197                 <listitem><para>
 198                         <function>ldb_msg_element_compare(3)</function>
 199                          - compare two ldb_message_element structures
 200                 </para></listitem>
 201
 202
 203                 <listitem><para>
 204                         <function>ldb_msg_find_int(3)</function>
 205                          - return an integer value from a ldb_message
 206                 </para></listitem>
 207
 208
 209                 <listitem><para>
 210                         <function>ldb_msg_find_uint(3)</function>
 211                          - return an unsigned integer value from a ldb_message
 212                 </para></listitem>
 213
 214
 215                 <listitem><para>
 216                         <function>ldb_msg_find_double(3)</function>
 217                          - return a double value from a ldb_message
 218                 </para></listitem>
 219
 220
 221                 <listitem><para>
 222                         <function>ldb_msg_find_string(3)</function>
 223                          - return a string value from a ldb_message
 224                 </para></listitem>
 225
 226
 227                 <listitem><para>
 228                         <function>ldb_set_alloc(3)</function>
 229                          - set the memory allocation function to be used by ldb
 230                 </para></listitem>
 231
 232
 233                 <listitem><para>
 234                         <function>ldb_set_debug(3)</function>
 235                          - set a debug handler to be used by ldb
 236                 </para></listitem>
 237
 238
 239                 <listitem><para>
 240                         <function>ldb_set_debug_stderr(3)</function>
 241                          - set a debug handler for stderr output
 242                 </para></listitem>
 243         </itemizedlist>
 244 </refsect1>
 245
 246 <refsect1>
 247         <title>Author</title>
 248
 249         <para>
 250                 ldb was written by
 251                  <ulink url="http://samba.org/~tridge/">Andrew Tridgell</ulink>.
 252         </para>
 253
 254         <para>
 255 If you wish to report a problem or make a suggestion then please see
 256 the <ulink url="http://ldb.samba.org/"/> web site for
 257 current contact and maintainer information.
 258         </para>
 259
 260         <para>
 261 ldb is released under the GNU Lesser General Public License version 2
 262 or later. Please see the file COPYING for license details.
 263         </para>
 264 </refsect1>
 265 </refentry>