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With this approach, users can collect and store multiple Data Entry Forms about the same item over time so that the entire history of the item is preserved in the system. The approach also provides a complete audit trail of all changes made to any information so that information managers can answer the question, "What did we know and when did we know it?"
As subsequent information is collected about a specific attribute of an item, {{IMSMANG}} updates the item’s Summary on an attribute-by-attribute basis. For example, Data Entry Form #1 collects some initial information about a Land. It sets The calculation of the priority to "Medium" Summary is done based on '''Date of Information''' and specifies therefore it is important that the land contains AP mines and Date of information is 25,000 sqm. Data Entry Form #2 updates information about reflecting the land area after a subsequent assessment. The report sets age of the priority to "High" information and specifies the presence of AP and AT mines, but it does not change the size or the status date of the land area. Data Entry Form #3 updates the land area's size and status after clearance operations are complete. The figure below shows how the land area's Summary is updated after all three reports are entered entry into the system{{IMSMANG}}.
[[Image:Understanding_IMSMA_Information_Model_-_Updating_CVs ver2.png|center|500px|''Example of Updating Summary items'']]
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Data Entry Form #1 collects some initial information about a Land. It sets the priority to "Medium" and specifies that the land contains AP mines and is 25,000 sqm. Data Entry Form #2 updates information about the land area after a subsequent assessment. The calculation of report sets the priority to "High" and specifies the Summary is done based on '''Date presence of Information''' AP and therefore AT mines, but it is important that Date does not change the size or the status of information is reflecting the age of land area. Data Entry Form #3 updates the information land area's size and not status after clearance operations are complete. The figure above shows how the date of entry land area's Summary is updated after all three reports are entered into {{IMSMANG}}the system.
{{Warning| Inserting a Data Entry Form i.e. based on ''Date of Information'' in a chain of updates must be done carefully so the expected end-result will be archived.}}
