Digerati
|
The digital version of
Literati, referring to those people knowledgeable about the digital
revolution. |
| digital subscriber
line (DSL) |
Technology for transmitting high-bandwidth
content over copper wire. |
dimension
|
A
construct in a multidimensional structure that represents a side of
a multidimensional cube. Each dimension represents a different category
that the business chooses to measure, such as customer, region, product,
and time. |
dimension
data
|
The data by which the user queries
the business measures. See also fact data, dimension table, and fact table.
|
dimension
hierarchy
|
A logical structure that
uses ordered levels. Synonymous with hierarchy. |
dimension
label
|
In a database table, a
text description for a dimension. For example, a dimension named GEOGRAPHY
might have the label Geographic Areas and display the label, rather than
the name, in reports, tables, and graphs. |
dimension
table
|
A
table in a star model that is joined to the fact table by a key value.
|
dimension
value
|
One
element in the list that makes up a dimension. For example, members in the
Geography dimension might include Boston and Paris. |
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dimension
value label
.
|
A text description for
a dimension value. For example, a PRODUCT dimension might have a value called
"LAPPC," the label for which is "Laptop PC." Dimension
value labels might appear as row, column, and page labels in reports or
tables and as tick labels in graphs. |
dimensional
model
|
A
model that supports a top-down design methodology. For each business process,
the dimensional model determines relevant facts and dimensions.
|
direct
access storage device (DASD)
|
A
data storage unit where data can be accessed directly without having to
progress through a serial file such as a magnetic tape. |
dirty
data
|
Data
that is in an unfit state to be loaded into a data warehouse and that must be
transformed or cleansed. |
Discoverer
(Oracle Discoverer)
|
The Oracle end-user analysis,
query, and reporting tool that is particularly good for use in the data
warehousing environment. |
distributed
application
|
An application made up
of distinct components running in separate runtime environments, usually
on different platforms connected via a network. Typical distributed applications
are two-tier (client/server), three-tier (client/middleware/server), and
n-tier (client/multiple middleware/multiple servers). |
DML
- Data Manipulation Language
|
SQL statements that query
and amend the database data. Common DML statements include SELECT, INSERT,
UPDATE, and DELETE. |
domain
name
|
The unique name that identifies
an internet site. Domain names always have two or more parts separated
by dots. |
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|
drill
|
The process of navigating from one item to a set
of related items. Drilling typically involves navigating up and down through
the levels in a hierarchy. See also drill-across, drill-down, drill-up,
|
drill-across
|
An analytical
technique that queries data from two or more fact tables in a single report.
|
drill-down
|
An
analytical technique that queries data from a summary row and navigates
through a hierarchy of data to reach the detail-level rows. |
drill-up
|
An
analytical technique that navigates from detail to header rows of data used
to view summarized or aggregated data.
|
DSL
- digital subscriber line
.
|
Technology for transmitting
high-bandwidth content over copper wire. |
DSS
- decision support system
|
A computer program that
analyzes business data and presents it so that users can
make business decisions more easily. |
DWM
- data warehouse method
|
A structured method for
the full lifecycle custom development of data warehouse projects. |
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