Abstract: A system for restoring purged data includes an input interface and a processor. The input interface to receive an indication of purged data to restore. The processor is to reinstate the purged data using a stored copy and rebuild one or more relations to the purged data using an effective change stack.

Abstract: A system for reporting using archived data includes an active memory, an archive memory, an interface, and a processor. The interface is to receive an indication to run a report. The processor is to run the report. The report accesses active data in the active memory and archive data in the archive memory. The archive data comprises former active data that has been archived. The archive data is accessed using a relation of an active object in the active memory with an archived object in the archive memory.

Abstract: A system for updating archived data includes an active memory, an archive memory, an interface, and a processor. The interface is to receive an indication to update data structure. The processor is to update archive data structure in the archive memory. The archive data structure comprises a former active data structure that has been archived.

Abstract: A system for archiving includes an active memory, an archive memory, an interface, and a processor. The interface is to receive an indication to archive an object in the active memory. The object has a relation to an other object. The processor is to archive the object in the archive memory. The other object maintains the relation with the object that has been archived.

Abstract: A system for managing data using purging includes an input interface and a processor. The input interface is to receive an indication of a data object to be purged. The processor is to prepare the data object to be purged, which includes severing weak relations of the data object as of a purge prepare time. Preparing the data object to be purged transitions the data object from an operational state to a purge prepared state. The weak relations of the data object are relations to non-purge data objects of an object tree. The data object in a purge prepared state is monitored for access. In response to a detection of an attempt to access the data object, reinstate the data object, which includes rebuilding the weak relations. Reinstating the data object transitions the data object from the purge prepared state to the operational state.

Abstract: A system for managing data using simulated purging includes an input interface and a processor. The input interface is to receive an indication of a data to simulate purging. The processor is to mark the data as purge simulated at a purge simulated time, to monitor the data for an attempt to access the data after the purge simulated time, to increase a count of a number of attempts to access the data after the purge simulated time by one in response to an attempt to access the data after the purge simulated time, and to unmark the data as purge simulated and cease monitoring the data for the attempt to access the data in response to the count of the number of attempts to access the data after the purge simulated time exceeding a threshold.

Abstract: A system for data management includes a root object, zero, one, or more member objects, and a processor. The root object is associated with a garbage collection root metadata. Each of the one or more member objects is associated with a garbage collection member metadata. The root object has a direct relation or an indirect relation to each of the one or more member objects. The processor is to determine that an object is the root object; determine whether the root object and the one or more member objects are to be garbage collected; and garbage collect the root object and the one or more member objects in the event that the root object and the one or more member objects are to be garbage collected.

Abstract: A system for restoring purged data includes an input interface and a processor. The input interface to receive an indication of purged data to restore. The processor is to reinstate the purged data using a stored copy and rebuild one or more relations to the purged data using an effective change stack.

Abstract: A system for restoring purged data includes an input interface and a processor. The input interface to receive an indication of purged data to restore. The processor is to reinstate the purged data using a stored copy and rebuild one or more relations to the purged data using an effective change stack.