
516 Analyzing and Securing Social Networks
and transactions should be executed concurrently. Therefore, concurrency control and recovery for
XML and RDF documents become a challenge for managing XML and RDF databases. This is yet
another aspect of integrity for semantic web documents.
The actions of the agents that make use of the semantic services to carry out operations such
as searching, querying, and integrating heterogeneous databases, as well as information sharing
in social media systems, have to ensure that the integrity of the data is maintained. These agents
cannot maliciously corrupt the data. They have to ensure that the data is a ...