getSchemas()
Syntax:
ResultSet getSchemas()
                     throws SQLException
                                        Description:
Retrieves the schema names available in this database. The results are ordered by TABLE_CATALOG and TABLE_SCHEM.
The schema columns are:
| TABLE_SCHEM | String | schema name | 
| TABLE_CATALOG | String | catalog name (may be null) | 
Returns:
a ResultSet object in which each row is a schema description
Throws:
SQLException - if a database access error occurs