Metadata change detection during metadata loading
During metadata loading, the system:
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Reloads the required static metadata tables: IRV tables and RD_DATADICTIONARY.
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Compares the static metadata tables with the data stored in DME_IA_SRC_TABLES and DME_IA_SRC_COLUMNS to detect significant changes including:
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New, missing, or changed reference path for an item
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Changed data type
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Increased data length for VARCHAR2 columns
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Changes to column (item) blinding status
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If significant changes are found, updates DME_IA_SRC_TABLES and DME_IA_SRC_COLUMNS, other extended metadata mapping tables, and the InForm input clinical data model tables. Note:
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Tables are never dropped. If an RDE view is missing, the system marks the corresponding DMW table as Not Used.
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Columns are never dropped. If an existing item is not included, it is marked Not Used. If a column data type is changed, a new column is created with the new data type.
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Updating a column's blinding status may require updating its table's blinding status as well.
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Displays the message "Metadata needs to be reloaded" and suspends data loading until it is done.
Parent topic: Automatic metadata change detection