Pipeline Open Data Standard Model Workshop - PODS

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Pipeline Open Data Standard PODS History Inline History PODS history is managed inside the PODS database PODS history is managed inside the database. History is managed through the Effective_From_Date & Effective_To_Date fields New records are created with the Effective_From_Date populated with current date and the Current_Indicator_LF = Y Modified records are managed with the Effective_To_Date populated with the modified Date and Current_Indicator_LF = N FEATURE_ID PREVIOUS_EVENT_ID PODS_USER CREATE_DATE EVENT_ID ORIGINAL_EVENT_ID EFFECTIVE_FROM_DATE EFFECTIVE_TO_DATE CURRENT_INDICATOR_LF ECOA 2217068 MIKEJS 6/14/2006 14:04 2218399 121091 8/17/2002 10:14 Y ECOA 2168774 MIKEJS 6/2/2006 14:25 2217068 121091 8/17/2002 10:14 6/14/2006 14:34 N ECOA 121091 SHEPASD 3/30/2006 9:25 2168774 121091 8/17/2002 10:14 6/2/2006 14:39 N ECOA CONOCO 8/17/2002 10:14 121091 121091 8/17/2002 10:14 3/30/2006 9:32 N © Copyright 2009 – PODS Association, Inc. All Rights Reserved 7
Pipeline Open Data Standard PODS History Offline History PODS history is managed outside the PODS database PODS Table X Field Field Table has a denormalized copy in the history database. The denormalized version has the record’s location fields as part of the history. PODS History Denormalized Table X Field Field Trigger creates a duplicate of the new record In the history database New records created PODS Trigger Inserts Record PODS History Trigger creates a copy of the modified/deleted record in the history database Record is modified or deleted PODS Trigger Inserts Record PODS History © Copyright 2009 – PODS Association, Inc. All Rights Reserved 8
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