A reusable software component that can be added to an application, reducing development time in the process. ActiveX is a Microsoft technology; ActiveX components can be used only by developers who work on Windows development systems.
aggregate function:
A function that produces a single result based on the contents of an entire set of table rows; also called a set function.
alias:
A short substitute or nickname for a table name.
API:
See application programming interface (API).
applet:
A small application written in the Java language, stored on a web server that’s downloaded to and executed on a web client that connects to the server.
application programming interface (API):
A standard means of communicating between an application and a database or other system resource.
assertion:
A constraint specified by a CREATE ASSERTION statement (rather than by a clause of a CREATE TABLE statement). Assertions commonly apply to more than one table.
atomic:
Incapable of being subdivided.
attribute:
A component of a structured type or relation.
back end:
That part of a database management system (DBMS) that interacts directly with the database. See also database management system (DBMS).
catalog:
A named collection of schemas. See also schema.
client:
An individual user workstation that represents the front end of a database management system (DBMS) — the part that displays information on a screen and responds to user input. See also front end and database management ...
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