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<title>Database providers: GNOME Data Access 5 manual</title>
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<div class="sect1">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="id-1.10.2.7"></a>Database providers</h2></div></div></div>
<p>
Each database provider is composed of a shared library (loaded at runtime) and some configuration files,
which are prefixed with the provider name. Also note that each provider comes with a PKG-CONFIG .pc file
which allows one to check if a provider is installed (it does not, like most of the .pc files, define
any CFLAGS or LIBS), and it's wise to include them in each provider's component.
</p>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.10.2.7.3"></a>'Generic' provider</h3></div></div></div>
<p>
Most of the providers are 'generic' as they have the same files structure, here for example
the PostgreSQL provider's file are:
</p>
<pre class="programlisting">
.
|-- lib
| |-- libgda-5.0
| | `-- providers
| | `-- libgda-postgres.so
| `-- pkgconfig
| `-- libgda-postgres-5.0.pc
`-- share
`-- libgda-5.0
|-- postgres_specs_add_column.xml
|-- postgres_specs_create_db.xml
|-- postgres_specs_create_index.xml
|-- postgres_specs_create_table.xml
|-- postgres_specs_create_view.xml
|-- postgres_specs_drop_column.xml
|-- postgres_specs_drop_db.xml
|-- postgres_specs_drop_index.xml
|-- postgres_specs_drop_table.xml
|-- postgres_specs_drop_view.xml
|-- postgres_specs_dsn.xml
`-- postgres_specs_rename_table.xml
</pre>
<p>
</p>
<p>
This kind of component should be made dependent on the database's library which is used,
such as LibPQ for PostgreSQL, and also on <span class="application">Libgda</span>'s runtime component.
</p>
</div>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.10.2.7.4"></a>The SQLite provider</h3></div></div></div>
<p>
The SQLite provider uses the same files layout as the 'generic' provider, but there is no need to
add a dependency on SQLite itself.
</p>
</div>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.10.2.7.5"></a>The JDBC provider</h3></div></div></div>
<p>
The JDBC provider allows one to access database through its JDBC driver, using the Java Native Interface
(JNI), and a Java virtual machine runtime. The files to include in this component are:
</p>
<pre class="programlisting">
.
|-- lib
| |-- libgda-5.0
| | `-- providers
| | |-- gdaprovider-5.0.jar
| | `-- libgda-jdbc.so
| `-- pkgconfig
| `-- libgda-jdbc-5.0.pc
`-- share
`-- libgda-5.0
|-- jdbc_specs_create_table.xml
`-- jdbc_specs_dsn.xml
</pre>
<p>
</p>
<p>
This component should be made dependent on the Java virtual machine.
</p>
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