The SYSIXCOL view is provided for compatibility with older versions of Sybase IQ that offered a SYSIXCOL system table. However, the SYSIXCOL system table has been replaced by the ISYSIDXCOL system table, and its corresponding SYSIDXCOL system view.
The SYSIXCOL view is a SQL Anywhere compatibility view. See "SYSIXCOL compatibility view (deprecated)" in SQL Anywhere Server – SQL Reference.