for extracting metadata from BO XI R3 use BusinessObject Enterprise Integrator, it doesn’t matter where or on what type of database your CMS Database is, running a integrator for the Database on which CMS Database is not going to give you the BOE Metadata
if you want to collect metadata from SQL Anywhere database itsefl, then it is not available directly, you can use JDBC Connection of RDBMS Integrator to do that provided SQL Anywhere has a JDBC Driver