- 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 sealed container that holds the read/write head and disk assembly within a disk unit.<br />(2) The part of a disk unit that contains the read and write heads, the magnetic disks, and the actuators.
Industry:Software
(1) A field or control that is on the Web page of a Web application.<br />(2) A servlet, JavaServer Pages (JSP) file, or a HyperText Markup Language (HTML) file. One or more Web components make up a Web module.
Industry:Software
(1) A section of a directory hierarchy, which is also called a directory tree. The subtree typically starts at a particular directory and includes all subdirectories and objects below that directory in the directory hierarchy; that is, any subdirectories or objects connected to the directory or to any lower level of its subdirectories.<br />(2) A tree structure created by arbitrarily denoting a node to be the root node in a tree. A subtree is always part of a whole tree.
Industry:Software
(1) A field or set of fields in a dependent file of a constraint relationship. Each foreign key value must either match a parent key value in the related parent file or be null.<br />(2) A column or set of columns that refers to a parent key.<br />(3) In a relational database, a key in one table that references the primary key in another table. See also constraint, primary key, unique key.<br />(4) In a federated system, a key in one nickname that references the primary key in another nickname and that the optimizer uses to improve query performance. This key is not validated when operations such as insert and update are performed.
Industry:Software
(1) A section of a JSP set aside for displaying personalized data or content.<br />(2) A space in a library where a cartridge is stored. See also cell.<br />(3) For a fixed-length relative record data set (RRDS), the data area addressed by a relative record number that may contain a record or be empty.
Industry:Software
(1) A field specified in a display file or database file that is reserved for information supplied by a user. See also output field.<br />(2) An area in a presentation space into which the program accepts input.
Industry:Software
(1) A section of the stack that contains the local variables, arguments, and register contents for an individual routine, as well as a pointer to the previous stack frame.<br />(2) See dynamic storage area.<br />(3) The physical representation of the activation of a routine. The stack frame is allocated and freed on a last-in, first-out basis.
Industry:Software
(1) A field used to arrange the records of a particular type within a file member.<br />(2) In EJB query language, a container-managed field in an entity bean that corresponds to one of the primary-key columns of a row in a relational database. Each key field is a member of the entity bean's key class.<br />(3) The portion of a record that is used (possibly with other key fields) to locate a data record in a key file See also alternate key.<br />(4) The field in a database segment used to store segment occurrences in sequential ascending order. A key field is also a search field. See also search field.<br />(5) See sequence field.
Industry:Software
(1) A security function of the operating system used to authorize users to any part of the system that is required by a job or task.<br />(2) In CICS/VSE, the facility provided by CICS for the control of access to resources protected by RSL security. The resources that can be protected include transactions, data sets, and transient data destinations. In CICS Transaction Server, the facility provided by CICS and RACF for the control of access to resources protected by RACF security classes. The resources that can be protected include transactions, data sets, and transient data destinations.
Industry:Software
(1) A file allocated in auxiliary storage that can be used to store saved data on disk (without requiring diskettes or tapes), to do I/O operations from a high-level language program, or to receive objects sent through the network. The system-recognized identifier for the object type is *FILE.<br />(2) In Backup, Recovery, and Media Services, an online file allocated on direct access storage for use as interim or short-term storage before off-loading to removable media or permanently deleting.
Industry:Software
