- Industria: Computer
- Number of terms: 4807
- Number of blossaries: 1
- Company Profile:
Sun Microsystems is a multinational vendor of computers, computer software and hardware, and information technology services.
The process of determining whether a user, device, or other entity is allowed to access a particular resource or a predetermined function (within a resource) via a specific access method. Based on definition found at http://www.csgnetwork.com/glossaryl.html
Industry:Computer
A system in which more than one processor can be active at any given time. While the processors are actively executing separate processes, they run completely asynchronously. However, synchronization between processors is essential when they access critical system resources or critical regions of system code. See also critical region, critical resource, multithreading, uniprocessor system.
Industry:Computer
The procedures that restore the system to running all properly configured domains after one or more domains have been rendered inactive due to software or hardware failures or due to unacceptable environmental conditions.
Industry:Computer
A synchronization mechanism for coordinating tasks even when data accesses are not involved. A barrier is analogous to a gate. Processors or threads operating in parallel reach the gate at different times, but none can pass through until all processors reach the gate. For example, suppose at the end of each day, all bank tellers are required to tally the amount of money that was deposited, and the amount that was withdrawn. These totals are then reported to the bank vice president, who must check the grand totals to verify debits equal credits. The tellers operate at their own speeds; that is, they finish totaling their transactions at different times. The barrier mechanism prevents tellers from leaving for home before the grand total is checked. If debits do not equal credits, all tellers must return to their desks to find the error. The barrier is removed after the vice president obtains a satisfactory grand total.
Industry:Computer
A static or dynamic object contained in a Web application that can be referenced by a URL.
Industry:Computer
The person responsible for configuring and administering the enterprise's computers, networks, and software systems.
Industry:Computer
A standard for specifying consistency rules that apply to the specifications contained in an RDF.
Industry:Computer
A standard extension mechanism for containers that provides connectivity to enterprise information systems. A connector is specific to an enterprise information system and consists of a resource adapter and application development tools for enterprise information system connectivity. The resource adapter is plugged in to a container through its support for system-level contracts defined in the Connector architecture.
Industry:Computer
The part of an XML document that precedes the XML data. The prolog includes the declaration and an optional DTD.
Industry:Computer
A special-purpose data type introduced by E. W. Dijkstra that coordinates access to a particular resource or set of shared resources. A semaphore has an integer value (that cannot become negative) with two operations allowed on it. The signal (V or up) operation increases the value by one, and in general indicates that a resource has become free. The wait (P or down) operation decreases the value by one, when that can be done without the value going negative, and in general indicates that a free resource is about to start being used. See also semaphore lock.
Industry:Computer
