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TIMB / DBI_AdvancedTalk_2002 / sld080.htm 

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 <TITLE>SQL Portability - Metadata</TITLE> 
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<P>Slide 80 of 93</P>
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<H2>SQL Portability - Metadata</H2>
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<P><UL>
<LI><H2>Getting data about your data:
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$sth = $dbh-&#062table_info( ... )
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<LI>Now allows parameters to qualify which tables you want info on
</UL>$sth = $dbh-&#062column_info($cat, $schema, $table, $col);
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<LI>Returns information about the columns of a table
</UL>$sth = $dbh-&#062primary_key_info($cat, $schema, $table);
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<LI>Returns information about the primary keys of a table
</UL>@keys = $dbh-&#062primary_key($cat, $schema, $table);
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<LI>Simpler way to return information about the primary keys of a table
</UL>$sth = $dbh-&#062foreign_key_info($pkc, $pks, $pkt, $fkc, $fks, $fkt);
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<LI>Returns information about foreign keys
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<LI><H2>These, and the features on the previous “SQL Portability” slides, are all fairly new so may not be supported by your driver yet. If not… offer to help implement them!</H2>
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