+ The update procedure is tolerant to crashes or hard interrupts
+ during database updating - data can be reconstructed following
+ a crash.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Input document formats</entry>
+ <entry>&xml;, &sgml;, Text, ISO2709 (&marc;)</entry>
+ <entry>
+ A system of input filters driven by
+ regular expressions allows most ASCII-based
+ data formats to be easily processed.
+ &sgml;, &xml;, ISO2709 (&marc;), and raw text are also
+ supported.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Relevance ranking</entry>
+ <entry>TF-IDF like</entry>
+ <entry>Relevance-ranking of free-text queries is supported
+ using a TF-IDF like algorithm.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Document storage</entry>
+ <entry>Index-only, Key storage, Document storage</entry>
+ <entry>Data can be, and usually is, imported
+ into &zebra;'s own storage, but &zebra; can also refer to
+ external files, building and maintaining indexes of "live"
+ collections.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Regular expression matching</entry>
+ <entry>Regexp </entry>
+ <entry>Full regular expression matching and "approximate
+ matching" (eg. spelling mistake corrections) are handled.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Search truncation</entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Remote update</entry>
+ <entry>&z3950; extended services</entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Supported Platforms</entry>
+ <entry>UNIX, Linux, Windows (NT/2000/2003/XP)</entry>
+ <entry>&zebra; is written in portable C, so it runs on most
+ Unix-like systems as well as Windows (NT/2000/2003/XP). Binary
+ distributions are
+ available for GNU/Debian Linux and Windows</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>&z3950;</entry>
+ <entry>&z3950; protocol support</entry>
+ <entry> Protocol facilities: Init, Search, Present (retrieval),
+ Segmentation (support for very large records), Delete, Scan
+ (index browsing), Sort, Close and support for the ``update''
+ Extended Service to add or replace an existing &xml;
+ record. Piggy-backed presents are honored in the search
+ request. Named result sets are supported.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Record Syntaxes</entry>
+ <entry></entry>
+ <entry> Multiple record syntaxes
+ for data retrieval: &grs1;, &sutrs;,
+ &xml;, ISO2709 (&marc;), etc. Records can be mapped between record syntaxes
+ and schemas on the fly.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry>Web Service support</entry>
+ <entry>&sru_gps;</entry>
+ <entry> The protocol operations <literal>explain</literal>,
+ <literal>searchRetrieve</literal> and <literal>scan</literal>
+ are supported. <ulink url="&url.cql;">&cql;</ulink> to internal
+ query model &rpn; conversion is supported. Extended RPN queries
+ for search/retrieve and scan are supported.</entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ <entry></entry>
+ <entry><xref linkend=""/></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>