表pbcattbl是pb里自动维护的数据表,用来保存数据库中所有的表的相关信息。select distinct "pbcattbl"."pbt_tnam","pbcattbl"."pbt_cmnt" from "pbcattbl"
表pbcatcol用来保存数据库中所有字段的相关信息。select "pbcatcol"."pbc_cnam","pbcatcol"."pbc_labl","pbcatcol"."pbc_tnam" from "pbcatcol" order by "pbcatcol"."pbc_hdr" asc