Data access and anonymity management

A method comprising:

• receiving a request to perform at least one of a data retrieval, a data modification, or a data insertion of user data associated with a first user of an electronic learning system;
• determining that at least a portion of the user data associated with the first user of the electronic learning system is stored in a first data store, the first data store storing:
• a plurality of user data from the electronic learning system;
• and
• an associated hash value for each of the plurality of user data;
• determining a first user identifier corresponding to the first user of the electronic learning system;
• accessing a second data store, the second data storing:
• a plurality of user identifiers;
• and
• an associated key value for each of the plurality of user identifiers;
• retrieving from the second data store, a first key value associated with the first user identifier;
• executing a cryptographic hash function, using the first key value as an input to the cryptographic hash function, wherein the output of the cryptographic hash function comprises a first hash value associated with the first user of the electronic learning system;
• accessing the first data store;
• using the first hash value to perform, within the first data store, the requested at least one data retrieval, data modification, or data insertion of user data associated with the first user of the electronic learning system;
• receiving, from a client device, a request to disassociate the first user from user data in the first data store;
• accessing the second data store and deleting from the second data store the first key value associated with the first user identifier, in response to the request to disassociate;
• and
• generating and storing an offline storage archive corresponding to the first data store, wherein said generating and storing does not include generating and storing an offline storage archive corresponding to the second data store.

A computer-program product tangibly embodied in a non-transitory machine-readable storage medium, including instructions configured to cause one or more data processors to perform actions including:

• receiving a request to perform at least one of a data retrieval, a data modification, or a data insertion of user data associated with a first user of an electronic learning system;
• determining that at least a portion of the user data associated with the first user of the electronic learning system is stored in a first data store, the first data store storing:
• a plurality of user data from the electronic learning system;
• and
• an associated hash value for each of the plurality of user data;
• determining a first user identifier corresponding to the first user of the electronic learning system;
• accessing a second data store, the second data storing:
• a plurality of user identifiers;
• and
• an associated key value for each of the plurality of user identifiers;
• retrieving from the second data store, a first key value associated with the first user identifier;
• executing a cryptographic hash function, using the first key value as an input to the cryptographic hash function, wherein the output of the cryptographic hash function comprises a first hash value associated with the first user of the electronic learning system;
• accessing the first data store;
• using the first hash value to perform, within the first data store, the requested at least one data retrieval, data modification, or data insertion of user data associated with the first user of the electronic learning system;
• receiving, from a client device, a request to disassociate the first user from user data in the first data store;
• accessing the second data store and deleting from the second data store the first key value associated with the first user identifier, in response to the request to disassociate;
• and
• generating and storing an offline storage archive corresponding to the first data store, wherein said generating and storing does not include generating and storing an offline storage archive corresponding to the second data store.