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   3    The view <code class="literal">referential_constraints</code> contains all
   4    referential (foreign key) constraints in the current database.
   5    Only those constraints are shown for which the current user has
   6    write access to the referencing table (by way of being the
   7    owner or having some privilege other than <code class="literal">SELECT</code>).
   8   </p><div class="table" id="id-1.7.6.38.3"><p class="title"><strong>Table 35.32. <code class="structname">referential_constraints</code> Columns</strong></p><div class="table-contents"><table class="table" summary="referential_constraints Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
   9        Column Type
  10       </p>
  11       <p>
  12        Description
  13       </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
  14        <code class="structfield">constraint_catalog</code> <code class="type">sql_identifier</code>
  15       </p>
  16       <p>
  17        Name of the database containing the constraint (always the current database)
  18       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  19        <code class="structfield">constraint_schema</code> <code class="type">sql_identifier</code>
  20       </p>
  21       <p>
  22        Name of the schema containing the constraint
  23       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  24        <code class="structfield">constraint_name</code> <code class="type">sql_identifier</code>
  25       </p>
  26       <p>
  27        Name of the constraint
  28       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  29        <code class="structfield">unique_constraint_catalog</code> <code class="type">sql_identifier</code>
  30       </p>
  31       <p>
  32        Name of the database that contains the unique or primary key
  33        constraint that the foreign key constraint references (always
  34        the current database)
  35       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  36        <code class="structfield">unique_constraint_schema</code> <code class="type">sql_identifier</code>
  37       </p>
  38       <p>
  39        Name of the schema that contains the unique or primary key
  40        constraint that the foreign key constraint references
  41       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  42        <code class="structfield">unique_constraint_name</code> <code class="type">sql_identifier</code>
  43       </p>
  44       <p>
  45        Name of the unique or primary key constraint that the foreign
  46        key constraint references
  47       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  48        <code class="structfield">match_option</code> <code class="type">character_data</code>
  49       </p>
  50       <p>
  51        Match option of the foreign key constraint:
  52        <code class="literal">FULL</code>, <code class="literal">PARTIAL</code>, or
  53        <code class="literal">NONE</code>.
  54       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  55        <code class="structfield">update_rule</code> <code class="type">character_data</code>
  56       </p>
  57       <p>
  58        Update rule of the foreign key constraint:
  59        <code class="literal">CASCADE</code>, <code class="literal">SET NULL</code>,
  60        <code class="literal">SET DEFAULT</code>, <code class="literal">RESTRICT</code>, or
  61        <code class="literal">NO ACTION</code>.
  62       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  63        <code class="structfield">delete_rule</code> <code class="type">character_data</code>
  64       </p>
  65       <p>
  66        Delete rule of the foreign key constraint:
  67        <code class="literal">CASCADE</code>, <code class="literal">SET NULL</code>,
  68        <code class="literal">SET DEFAULT</code>, <code class="literal">RESTRICT</code>, or
  69        <code class="literal">NO ACTION</code>.
  70       </p></td></tr></tbody></table></div></div><br class="table-break" /></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="infoschema-parameters.html" title="35.33. parameters">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="information-schema.html" title="Chapter 35. The Information Schema">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="infoschema-role-column-grants.html" title="35.35. role_column_grants">Next</a></td></tr><tr><td width="40%" align="left" valign="top">35.33. <code class="literal">parameters</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 18.0 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 35.35. <code class="literal">role_column_grants</code></td></tr></table></div></body></html>