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<chapter id="information-schema">

<title>The Information Schema</title>

<entry><type>sql_identifier</type></entry>

<entry>

Name of the database that contains the table that contains the

column that is restricted bysome constraint (always the

column that is restricted bythis constraint (always the

current database)

</entry>

</row>

<entry><type>sql_identifier</type></entry>

<entry>

Name of the schema that contains the table that contains the

column that is restricted bysome constraint

column that is restricted bythis constraint

</entry>

</row>

<entry><type>sql_identifier</type></entry>

<entry>

Name of the table that contains the column that is restricted

bysome constraint

bythis constraint

</entry>

</row>

<row>

<entry><literal>column_name</literal></entry>

<entry><type>sql_identifier</type></entry>

<entry>

Name of the column that is restricted bysome constraint

Name of the column that is restricted bythis constraint

</entry>

</row>

<entry><literal>position_in_unique_constraint</literal></entry>

<entry><type>cardinal_number</type></entry>

<entry>

Not yet implemented

For a foreign-key constraint, ordinal position of the referenced

column within its unique constraint (count starts at 1);

otherwise null

</entry>

</row>

</tbody>