2 ) Administrative controls to allow a license to index certain documents and not others, and adjust the system so that the speed of indexing, query processing, relevancy ranking and myriad other attributes can be altered.
12.
A deductive engine called a classifier utilizes forward chaining, semantic unification, and object-oriented truth maintenance technologies in order to compile the declarative knowledge into a network designed to efficiently support on-line deductive query processing.
13.
This metadata is automatically maintained during insert, update, and delete operations and this is what allows DB2 with BLU Acceleration to automatically detect large sections of data that is not needed during query processing and to effectively ignore it.
14.
"' Approximate query processing "'is hypothesis testing, etc . Approximate query processing often provides probabilistic error guarantees with which users of database systems employing those techniques can be notified how the answers are close to exact answers.
15.
"' Approximate query processing "'is hypothesis testing, etc . Approximate query processing often provides probabilistic error guarantees with which users of database systems employing those techniques can be notified how the answers are close to exact answers.
16.
Since the answer set for a monotonic query can only grow as more tuples are added to the database, query processing may be optimized by executing only the new portions of the database and adding the new results to the existing answer set.
17.
A sample large project in which rasdaman is being used for large-scale services in all Earth sciences is EarthServer : six services with a volume of at least 100 Terabyte each are being set up for integrated data / metadata retrieval and distributed query processing.
18.
For MapReduce-based systems, the merit of row-store is that there is no extra network costs to construct a row in query processing, and the merit of column-store is that there is no unnecessary local I / O costs when read data from disks.
19.
Moreover, this disparity of realms is further complicated by leaky abstractions, such as is common in the case of query 4 ), where the " target document " may exist, but may not encapsulate the " metadata " in a manner expected by the user, nor the designer of the query processing system.
