D
data analysis
A process including acquiring, organizing, transforming, and modeling data to support decision‑making.
Data Explorer
A tool that displays records from a database stored in FastDB. Data Explorer provides a summary view for a table and a detail view for records, tables, selections, and segments.
Related terms
Data Tree, FastDB, record, table
data field
A location storing data having a specific type. A data field typically contains data from a database or other data source. A data field appears as a column when viewing a table in Data Explorer. For example, the BIRT Data Analytics Demo database includes the data field types listed in Table G‑1.
Table G‑1 Data field types
Icon
Field type
Description
Calculated
 
Displays a value result from an expression
Date
 
Contains numbers that represent day, month, and year
Date and time
 
Contains numbers that represent day, month, year, and time of day
Full numeric
 
Contains whole, or integer numbers, such as 1 or 1000
Real numeric
 
Contains real, or partial numbers such as 1.05 or 0.003
Time
 
Contains a value representing time of day
Text
 
Contains a string of alphabetic characters
Related terms
record, Data Explorer, Data Tree, data types
data integration
A process through which data in varied sources is combined.
data mining
A computational process used to extract and transform data to prepare it for analysis.
Related term
analysis
data repository
A physical or virtual location for storage and retrieval of data.
Related term
FastDB
Data Tree
A tool that supports viewing and working with databases, tables, and records stored in FastDB. Data Tree includes Discrete Values, My Data, and My Folders viewers.
Related terms
database, Discrete Values Viewer, My Data Viewer, My Folders Viewer, record, table
data types
A data type defines the limits of a data field in a BIRT Analytics database. For example, the BIRT Data Analytics demo database includes the data types listed in Table G‑2.
Table G‑2 Data types in BIRT Analytics Loader
Data type
Description
Date
Contains numbers that represent day, month, and year. The default format is mm_dd_yyyy.
Datetime
Date and time data from January 1, 1753, through December 31, 9999, providing accuracy to three-hundredths of a second, or 3.33 milliseconds. The default format is yyyy_mm_dd_hh_MM_ss.
Integer
Integer data from -2^31+1(-2,147,483,647) through 2^31‑1 (2,147,483,647).
Longint
Integer data from -2^63+1(-9,223,372,036,854,775,807) through 2^63-1 (9,223,372,036,854,775,807).
Real
Floating precision number data with the following valid values:
-1.79769×10^308 through 1.79769×10^308.
String
A sequence of ASCII characters.
Time
Contains a value representing time of day. The default format is hh_MM_ss.
Unicode
A sequence of characters based on consistent encoding, representation, and handling of text as expressed in global writing systems.
Related terms
Data Explorer, data field, Data Tree, record
database
1 An integrated collection of logically related records that provides data for information application platforms, such as BIRT. The database model most commonly used is the relational model. Other typical models are entity‑relationship, hierarchical, network, object, and object-relational.
2 An integrated set of logically related records stored in FastDB.
Related terms
record, table
decision tree
A predictive analytics technique that predicts the value of a target variable, based on values of multiple input variables. For example, use a decision tree to predict a survival rate, based on characteristics of the population that may survive.
Related terms
Decision Tree, predictive analytics
Decision Tree
A predictive analytics tool that uses the decision tree technique to predict an outcome, based on values of multiple input variables. For example, use Decision Tree to predict the product a customer will purchase, based on customer, purchase, gender, occupation, and income data.
Related terms
association rules, predictive analytics
Decodes
A tool that supports renaming a data field stored in FastDB.
Related terms
data analysis, data field, FastDB
Dial
A data visualization gadget that uses a needle-shaped pointer to display defined measures and numeric values in a range.
Related terms
Canvas, Cylinder, Funnel, gadget, Gallery, Label, Meter, Sphere
Discrete Values Viewer
A tool that supports viewing discrete values in a data record, selection, or segment.
Related terms
My Data Viewer, My Folders Viewer, record, segment, selection
Downloads
A tool that supports writing FastDB records to an external database.
Related terms
database, Export file, FastDB, record
Dubnium.exe
The file that runs the BIRT Analytics data repository, FastDB.
Related term
FastDB