Programming terms starting with E

59 terms

EAR file Enterprise Archive file. A JAR archive that contains a J2EE application.
ebXML Electronic Business XML. A group of specifications designed to enable enterprises to conduct business through the exchange of XML-based messages.
eclectic Derived from many sources. Some would say too many.
EDGE (Enhanced Data GSM Environment) Enhanced Data GSM Environment (EDGE) is a new, faster version of GSM. EDGE is designed to support transfer rates up to 384Kbps and enable the delivery of…
edit-compile-run cycle A common part of the program development process. A source file is created initially and compiled.
EJB See Enterprise JavaBeans.
EJB container A container that implements the EJB component contract of the J2EE architecture.
EJB container provider A vendor that supplies an EJB container.
EJB context An object that allows an enterprise bean to invoke services provided by the container and to obtain the information about the caller of a client-invoked…
EJB home object An object that provides the life-cycle operations (create, remove, find) for an enterprise bean.
EJB JAR file A JAR archive that contains an EJB module.
EJB module A deployable unit that consists of one or more enterprise beans and an EJB deployment descriptor.
EJB object An object whose class implements the enterprise bean's remote interface. A client never references an enterprise bean instance directly; a client always…
EJB server Software that provides services to an EJB container. For example, an EJB container typically relies on a transaction manager that is part of the EJB…
EJB server provider A vendor that supplies an EJB server.
element (EH-leh-ment) A basic part of a whole. In chemistry, refers to a simple substance that cannot be broken down into smaller parts or changed into another…
else A Java keyword used to execute a block of statements in the case that the test condition with the if keyword evaluates to false.
EmbeddedJava Technology The availability of Java 2 Platform, Micro Edition technology under a restrictive license agreement that allows a licensee to leverage certain Java…
embedding When something is contained in something else, particularly when that might be considered surprising: "I've embedded a complete Perl interpreter in my…
empty subclass test The notion that an empty "derived class" should behave exactly like its "base class".
empty tag A tag that does not enclose any content.
en passant When you change a "value" as it is being copied. [From French, "in passing", as in the exotic pawn-capturing maneuver in chess.]
encapsulation Any method packaging an enzyme or bacterium and maintaining its normal functions. Used to immobilize cells in a bioreactor.
endian See "little-endian" and "big-endian".
enterprise bean A J2EE component that implements a business task or business entity and is hosted by an EJB container; either an entity bean, a session bean, or a…
enterprise bean provider An application developer who produces enterprise bean classes, remote and home interfaces, and deployment descriptor files, and packages them in an EJB…
enterprise information system The applications that constitute an enterprise's existing system for handling companywide information.
enterprise information system resource An entity that provides enterprise information system-specific functionality to its clients.
Enterprise JavaBeans (EJB) A component architecture for the development and deployment of object-oriented, distributed, enterprise-level applications.
Enterprise JavaBeans Query Language (EJB QL) Defines the queries for the finder and select methods of an entity bean having container-managed persistence.
entity A legally recognized organization.
entity bean An enterprise bean that represents persistent data maintained in a database. An entity bean can manage its own persistence or can delegate this function…
entity reference A reference to an entity that is substituted for the reference when the XML document is parsed.
enum A Java keyword used to declare an enumerated type.
enumerated type A data type - not directly available in Java - in which symbolic names are used for a sequence of constant numeric values.
Environment All the natural and living things around us. The earth, air, weather, plants, and animals all make up our environment.
environment variable A mechanism by which some high-level agent such as a user can pass its preferences down to its future offspring (child processes, grandchild processes…
EOF End of File. Sometimes used metaphorically as the terminating string of a "here document".
errno The error number returned by a "syscall" when it fails. Perl refers to the error by the name $! (or $OS_ERROR if you use the English module).
error Error The difference between a measured value of a quantity and its true value. Different types of errors are inherent to observations.
escape sequence See "metasymbol".
ETSI (European Telecommunications Standards Institute) The European Telecommunications Standards Institute (ETSI) is a non-profit organization that establishes telecommunications standards for Europe.
exception the temporary suspension of some essential element of a policy, procedure, or requirement caused by circumstances that are expected to return to normal at…
exception handler The try statement acts as an exception handler - a place where exception objects are caught and dealt with.
exception handling The way a program responds to an error. The exception handling mechanism in Perl is the eval operator.
exclusive-or operator The exclusive-or operator (^) is both a boolean operator and a bit manipulation operator.
exec To throw away the current "process"'s program and replace it with another without exiting the process or relinquishing any resources held (apart from the…
executable content An application that runs from within an HTML file. See also applet.
executable file A "file" that is specially marked to tell the "operating system" that it's okay to run this file as a program. Usually shortened to "executable".
Execute To complete; to sign; to carry out according to its terms.
execute bit The special mark that tells the operating system it can run this program. There are actually three execute bits under Unix, and which bit gets used…
exit status See "status".
export Data extracted or taken out of one environment or application usually in a prescribed format, and usually for import into another environment or…
expression A combination of operands and operators that produces a resulting value. Expressions have a resulting type, that affects the context in which they may be…
extends Class X extends class Y to add functionality, either by adding fields or methods to class Y, or by overriding methods of class Y.
Extensible Markup Language See XML.
extension The short single-stranded stretch of nucleotides remaining on a double-stranded DNA molecule, following treatment with a restriction endonuclease which…
external entity An entity that exists as an external XML file, which is included in the XML document using an entity reference.
external subset That part of a DTD that is defined by references to external DTD files.