The jdbc_topology_query element, which is used to define a topology theme, has the following definition:

<!ELEMENT jdbc_topology_query (#PCDATA)>
<!ATTLIST jdbc_topology_query
  asis (TRUE|FALSE) "FALSE"
  topology_name CDATA #REQUIRED
  feature_table CDATA #REQUIRED
  spatial_column CDATA #REQUIRED
  label_column CDATA #IMPLIED
  label_style CDATA #IMPLIED
  render_style CDATA #IMPLIED
  datasource CDATA #IMPLIED
  edge_style CDATA #IMPLIED
  edge_marker_style CDATA #IMPLIED
  edge_marker_size CDATA #IMPLIED
  edge_label_style CDATA #IMPLIED
  node_style CDATA #IMPLIED
  node_label_style CDATA #IMPLIED
  face_style CDATA #IMPLIED
  face_label_style CDATA #IMPLIED
  jdbc_host CDATA #IMPLIED
  jdbc_port CDATA #IMPLIED
  jdbc_sid CDATA #IMPLIED
  jdbc_user CDATA #IMPLIED
  jdbc_password CDATA #IMPLIED
  jdbc_srid CDATA #IMPLIED
  jdbc_mode (thin|oci8) "thin"
>

For detailed usage and reference information about topology themes, see Topology Themes.