IBM i Series, Руководство пользователя

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IBM Licensed Programs: Application Development Products
620
iSeries Handbook
• Screen Design Aid (SDA)
SDA is used to interactively design, create, and maintain customer application screens
(displays and menus).
Changes to the attributes and colors of fields can be made and immediately displayed
using the testing facility of SDA. This also provides a useful application prototyping
capability to allow application end users of the application to participate in the design
phase.
SDA allows the programmer to:
– Define fields and constants for the screen format
– Select a database file and fields from that database file
– Add or remove attributes and colors to or from the fields and constants
– Change positions (move, copy, or shift) of, or remove, a field
– Display or change work display field conditioning
– Display or change ruler where the cursor is positioned
In addition to testing the display being worked on, a print facility is also provided to assist
with the documentation of an application.
Screen Design Aid also provides support in System/36 and System/38 environments.
• Report Layout Utility (RLU)
The Report Layout Utility (RLU) allows a programmer to define the layout of a printed
report on the screen. RLU has a full-screen editing capability and allows the programmer
to review report prototypes easily. After the report image is final, the programmer uses
RLU line commands and function keys to define record formats and fields.
• Data File Utility/Application Development (DFU/AD)
Data File Utility/Application Development can be used to define, create, and maintain
database applications that are primarily oriented to data entry, inquiry, or file
maintenance. It is especially useful for creating test data for an application being
developed.
DFU/AD can use any of three file definitions:
– RPG II File and Input specifications (F & I specs)
– Interactive Data Definition Utility (IDDU) definitions
– File definition stored with a database file
All iSeries system file access methods are supported (sequential, indexed, and direct).
The applications that are created take advantage of the Data File Utility/Application
Execution (DFU/AE) support provided within the IBM OS/400 to allow validation of
database fields and additional fields as well as scrolling forward and backward when
browsing database records.