d statement</DT
></DL
></DD
><DT
>44.4. <A
HREF="spi-visibility.html"
>Visibility of Data Changes</A
></DT
><DT
>44.5. <A
HREF="spi-examples.html"
>Examples</A
></DT
></DL
></DIV
><P
>  The <I
CLASS="FIRSTTERM"
>Server Programming Interface</I
>
  (<ACRONYM
CLASS="ACRONYM"
>SPI</ACRONYM
>) gives writers of user-defined
  <ACRONYM
CLASS="ACRONYM"
>C</ACRONYM
> functions the ability to run
  <ACRONYM
CLASS="ACRONYM"
>SQL</ACRONYM
> commands inside their functions.
  <ACRONYM
CLASS="ACRONYM"
>SPI</ACRONYM
> is