- 行业: Computer
- Number of terms: 98482
- Number of blossaries: 0
- Company Profile:
Sometimes referred to as “Big Blue” IBM is a multinational corporation headquartered in Armonk, New York. It manufactures computer hardware and software and provides information technology and services.
(1) A measurement type. Each resource that can be monitored for performance, availability, reliability, and other attributes has one or more metrics about which data can be collected. Sample metrics include the amount of RAM on a PC, the number of help desk calls made by a customer, and the mean time to failure for a hardware device. See also service level objective.<br />(2) A holder for information, usually a business performance measurement, in a monitoring context.
Industry:Software
(1) A mechanism by which a process can be notified of, or affected by, an event occurring in the system. Examples of such events include hardware exceptions and specific actions by processes. The term signal is also used to refer to the event itself.<br />(2) In operating system operations, a method of inter-process communication that simulates software interrupts.<br />(3) In replication, an SQL statement that allows communication with the Capture program and the Q Capture program. A signal is inserted into the signal control table and received by the Capture program or the Q Capture program when the program reads the log entry for the signal insert.<br />(4) In UML modeling, model elements that specify one-way, asynchronous communications between active objects and that are independent of the classifiers that handle them.<br />(5) A condition that might or might not be reported during program execution. For example, a signal can represent erroneous arithmetic operations, such as division by zero.
Industry:Software
(1) A mechanism by which a secure proxy data channel can be established between two computers.<br />(2) A client/server architecture that transports TCP/IP traffic through a secure gateway. A SOCKS server performs many of the same services that a proxy server does.
Industry:Software
(1) A mechanism for connecting two unlike parts or machines, or for electrically or physically connecting a device to a computer or to another device.<br />(2) A set of software modules that communicate with an integration broker and with applications or technologies to perform tasks such as executing application logic and exchanging data.<br />(3) A transparent, intermediary software component that allows two other software components to communicate with one another.
Industry:Software
(1) A mechanism for describing and constraining the content of XML files by indicating which elements are allowed and in which combinations. XML schemas are an alternative to document type definitions (DTDs) and can be used to extend functionality in the areas of data typing, inheritance, and presentation.<br />(2) A means for defining the structure, content, and semantics of XML documents as defined by a World Wide Web Consortium (W3C) recommendation.
Industry:Software
(1) A mechanism on a pointing device, such as a mouse, used to request or start an action.<br />(2) A graphic that executes an action when clicked.
Industry:Software
(1) A mechanism that can be used to create new data types. A UDT can extend the capabilities of the built-in data types and capture the unique semantics of user data.<br />(2) See distinct type.
Industry:Software
(1) A mechanism that is used to synchronize one or more jobs.<br />(2) An indicator used to control access to a file. For example, in a multiuser application, a semaphore is a flag that prevents simultaneous access to a file.<br />(3) In UNIX systems, a general method of communication between two processes that extends the features of signals.<br />(4) An object used by multi-threaded applications for signaling purposes and for controlling access to serially reusable resources. Processes can be locked to a resource with semaphores if the processes follow certain programming conventions.
Industry:Software
(1) A media access method that monitors another station's transmissions. If the data station detects another signal during transmission, it stops transmitting, sends a jam signal, then waits for a variable time before trying again.<br />(2) A class of medium access procedures that allows multiple stations to access the medium at will, without explicit prior coordination, and avoids contention by way of carrier sense and deference. Contention is resolved by way of collision detection and transmission.
Industry:Software
(1) A member file in an object library.<br />(2) A file that contains compiled code.
Industry:Software
