<varlistentry>

<term><option>no_indicator</option></term>

<listitem>

<para>

Do not use indicators but instead use special values to represent

NULLs. Historically there have been databases using this approach.

</para>

</listitem>

<varlistentry>

<term><option>prepare</option></term>

<listitem>

<para>

Prepare all statements before using them. Libecpg will keep a cache of

prepared statments and reuse a statement if it gets executed again. If the

cache runs full, libecpg will free the least used statement.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><option>questionmarks</option></term>

<listitem>

<para>

Allow questionmark as placeholder for compatibility reasons.

This used to be the default long ago.

</para>

</listitem>