- Q -
The quality of a
database that exhibits entity and referential
integrity, and has controls to ensure no values in any
of the fields lie outside their expected range. Often it
implies that the database is reconcilable to other
Type Definition. A DTD defines the legal building blocks of an
XML document. It defines the document structure with a list of
Enterprise Java Beans. An architecture for
setting up program components, written tin the Java language,
that run in the server parts of a computer network that uses
the client-server model.
Something about which
you want to store data; typically a person, place, thing,
concept, or event. Also called a record in the old
file-based system. Entities are grouped together
to form tables or entity sets
The absence of null
values in a primary key. Guarantees that each entity will
have a unique identity.
See also referential integrity.
eXchange (FIX) protocol is a messaging standard developed
specifically for the real-time electronic exchange of securities
transactions. FIX is a public-domain specification owned and
maintained by FIX Protocol, Ltd.
attribute in one table that is used to relate that data to
data in another table. Example: a student table may
contain an attribute called class code. In the student table
the class code is a foreign key because it allows us to
relate that table to the class table where the class code is
the primary key and contains the class year. We could then
print a list of students and their class standing as a result
of this foreign key/primary key relationship.