粤磊 informatica powercenter学习笔记(十四)_下
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3如果需要找到源与目标表的对应逻辑关系可以用下列QUERY实现
SELECT opb_src.source_name src_table_nm, opb_src_fld.src_name src_col_nm, opb_targ.target_name tgt_table_nm, opb_targ_fld.target_name tgt_col_nm, MAX(opb_targ_fld_expr.user_comment) etl_trnsfrm_logic_dn, MAX(opb_targ_fld_expr.trans_expr) etl_trnsfrm_logic_exprn_tx, opb_src.ownername src_own_nm, 'CRDW' tgt_own_nm FROM opb_subject, opb_mapping, opb_src, opb_src_fld, opb_targ, opb_targ_fld, opb_analyze_dep dependency, opb_widget_inst frominstances, opb_widget_inst toinstances, opb_targ_fld_expr WHERE opb_subject.subj_id = opb_mapping.subject_id AND opb_mapping.mapping_id = dependency.mapping_id AND opb_mapping.mapping_id = frominstances.mapping_id AND opb_mapping.mapping_id = toinstances.mapping_id AND dependency.mapping_id = frominstances.mapping_id AND dependency.mapping_id = toinstances.mapping_id AND opb_targ.target_id = toinstances.widget_id AND toinstances.widget_type = 2 AND opb_targ_fld.target_id = opb_targ.target_id AND opb_targ_fld.fldid = dependency.to_field_id AND toinstances.instance_id = dependency.to_instance_id AND opb_src.src_id = frominstances.widget_id AND frominstances.widget_type = 1 AND opb_src_fld.src_id = opb_src.src_id AND opb_src_fld.fldid = dependency.from_field_id AND frominstances.instance_id = dependency.from_instance_id AND opb_targ_fld_expr.mapping_id = toinstances.mapping_id AND opb_targ_fld_expr.target_inst_id = toinstances.instance_id AND opb_targ_fld_expr.target_fld = opb_targ_fld.fldid AND opb_src_fld.is_hidden = 0 AND opb_mapping.ref_widget_id = 0 AND opb_mapping.version_number = toinstances.version_number AND opb_mapping.version_number = frominstances.version_number AND opb_mapping.version_number = dependency.version_number AND opb_mapping.version_number = opb_targ_fld_expr.version_number AND opb_src.version_number = opb_src_fld.version_number AND opb_targ.version_number = opb_targ_fld.version_number AND opb_mapping.is_visible = 1 AND opb_src.is_visible = 1 AND opb_targ.is_visible = 1 GROUP BY opb_src.source_name, opb_src_fld.src_name, opb_targ.target_name, opb_targ_fld.target_name, opb_src.ownername;
以上三个QUERY根据元数据库里数据量的大小和刷新频率,可以建成视图或物化视图,做成报表来实现对INFORMATICA源和目标及流向的元数据监控,当某一开发人员在INFAMATICA开发时在前台界面对源或目标做改动时,你通过后台可以做以完全的监控,以确保ETL开发的数据质量。
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