In particular, to be able to monitor queries on the data, an attacker has to have control over an SP when the queries are executed.
Thus, homomorphic encryption can be considered secure against strong Q&BKQ-attackers with background knowledge of the data and queries and the ability to monitor queries.
Hence, the MAPE-K loop for this job is started, and the monitor queries the actual configuration of the application, the Hadoop environment, and the available computing resources.
Either the local Monitor queries the remote Monitor to obtain process state information, or, alternatively, the Monitor can register at a remote monitor to receive notifications whenever the state of remote monitored processes changes.
An approach that can be used to protect data from attackers who are able to monitor queries, and have background knowledge of the executed queries (BKQ), has to offer pattern confidentiality.
However, once an attacker can monitor queries or modifications it is not necessary for them to have background knowledge of the data because indistinguishable ciphertexts alone do not protect against Q&BKD-attackers and searchable encryption approaches do not provide access confidentiality (cf. Figure 3) [21].
In particular, estimation of future query execution time may have an important impact on query scheduling and monitoring of query processing [3, 4, 16, 17].
DDE refers to dichloro-2,2-bis p-chlorophenyl ethylene PCB refers to polychlorinated biphenyls The dissemination plan included monitoring all queries received from women and associated outcomes.
As the data were collected in a large multi-national setting with no data monitoring and queries applied, extreme deviations were excluded from analysis.
