Database Reference
In-Depth Information
A classword is the last term in an attribute name such as
Amount
,
Code
, and
Name
. Classwords allow for the assignment of common do-
mains.
classword
A collection is a set of one or more documents. If we had a million or-
ders, we could store all of these order documents in one
Order
collec-
tion.
collection
Column-oriented databases such as Cassandra, are NoSQL databases
which can work with very complex data types such as unformatted text
and imagery, and this data can also be defined on the fly.
column-orien-
ted
A concept is a key idea that is both
basic
and
critical
to your audience.
“Basic” means this term is probably mentioned many times a day in con-
versations with the people who are the audience for the model, which
includes the people who need to validate the model as well as the people
who need to use the model. “Critical” means the business would be very
different or non-existent without this concept.
concept
A conceptual data model is a set of symbols and text representing the
key concepts and rules binding these key concepts for a specific busi-
ness or application scope. The CDM represents the high level business
solution.
conceptual data
model (CDM)
A conformed dimension is one that is shared across the business intel-
ligence environment.
Customer
,
Account
,
Employee
,
Product
,
Time
,
and
Geography
are examples of conformed dimensions.
conformed di-
mension
A data model is a set of symbols and text which precisely explains a
business information landscape. A box with the word “Customer” with-
in it represents the concept of a real
Customer
, such as
Bob
,
IBM
, or
Walmart
, on a data model. A line represents a relationship between two
concepts such as capturing that a
Customer
may own one or many
Ac-
counts
.
data model
