Reasonably,
concurrency control schemes are required for mobile transactions to preserve data currency and consistency.
" A distributed
concurrency control mechanism for XML data", Journal of Computer and System Sciences, 77(6): 1009-1022.
It covers database systems and data models; design concepts (the relational database model, entity relationship modeling, advanced data modeling, and normalization of database tables); advanced design and implementation; advanced database concepts (transaction management and
concurrency control, database performance tuning and query optimization, distributed database management systems, and business intelligence and data warehouses); database connectivity and web technologies; and administration and security.
While managing large increments and simultaneously running analyses can result in long wait times, Fujitsu has adopted a solution in the form of MultiVersion
Concurrency Control (MVCC (3)), which allows analyses to run at the same time that data domains are managed.
It is a toolkit providing recovery and
concurrency control features.
Other topics include
concurrency control mechanisms in data service layers, compositional verification of UML dynamic models, checking distributed programs with partially ordered atoms, and aspect mining for Linux.
Oracle Berkeley DB Release 4.5 now supports multi-version
concurrency control, non-stop upgrades for replicated environments and a pre-built replication framework to simplify development of highly available applications.
Examples of concerns range from non-functional notions such as security, reliability, and manageability to precise implementation techniques such as
concurrency control, caching, and error recovery.