Empress 4GL

EMPRESS 4GL is the fourth-generation application development environment designed specifically for developing on-line, interactive applications. Features include screen painting, overlapping windows, function key definition, and event-driven execution. Without programming, users can create default applications to access EMPRESS databases. Custom-designed interfaces make data manipulation easier with menus, windows, function keys, and mouse.

Empress 4GL also provides Application Generator which generates Empress 4GL application code automatically. Users can create an interactive menu-driven application on one or more tables, with function keys to perform SELECT, INSERT, UPDATE, or DELETE operations on data in the EMPRESS database.

Since the Application Generator generates EMPRESS 4GL application code automatically, users can use the Application Generator to prototype, or modify the 4GL code that is generated to customize or enhance the application.

Empress 4GL has the following features:

Power

• Use and display variable-length text, binary, and multimedia data stored in EMPRESS RDBMS tables
• Call existing programs written in any language from EMPRESS 4GL
• Use procedural language extensions to programs which cannot be specified declaratively
• Use the Application Generator to create menu-driven EMPRESS RDBMS applications to SELECT, INSERT, UPDATE, or DELETE data
• Create new applications and modify existing applications
• Edit application scripts, window definitions, key scripts, and domain definitions
• Create new forms and edit, copy, delete and rename existing forms
• Modify, create and design windows and forms using the screen painting utility
• Trace programming errors with menu-driven debugging tools
• Build customized executables as read-only runtime executables
• Extend the capability of the EMPRESS 4GL functions and operators with User Defined Functions
• Develop and display multiple windows for each application
• Control window displays with Window Programming Functions
• Alter the size of windows using function keys

Ease of Use

• Allows users to use almost any type of terminal via a terminal database
• Provides direct access to EMPRESS RDBMS, EMPRESS Report Writer, and the Host Language Interface
• Associates I/O fields in windows to database attributes to automatically pass data between them
• Builds interactive applications for the display and update of multiple records on a single screen
• Allows development and runtime modules to be compiled as sharable which means less memory per user as well as a faster response time
• Application Generator automatically provides the framework for building more complex applications
• Provides screen layout independent of applications' programming logic, which may be altered freely
• Uses screen painting to create and customize data input/output formats
• Draws forms as they will appear in an application
• Event Driven Logic encapsulated in keystrokes and field definitions

Fast Development Time

• Built-in handling for asynchronous interrupts including mouse support, touch screen, and arbitrary key presses
• Full screen editor removes the need to code screen definitions
• Application Generator generates application code automatically
• Separation of display and logic definition allows one to be modified without affecting the other, enhancing programmer productivity
• Interfaced to X Windowing systems to give maximum flexibility in developing Graphical User Interfaces (GUIs)

Empress 4GL includes the following module :

MODULE	DESCRIPTION
Emp4GL	Empress 4th Generation Language Screen Interface Application Builder

Software/Hardware Requirements

It requires Empress RDBMS to function.

• Memory: Minimum 32 MB under X environment
• Disk: 50 MB
• Compiler: None
• X Window: X11 Development Library
• Network: TCP/IP for UNIX
• Platforms: Contact Empress

Pricing

Empress 4GL pricing varies depending on the platform, number of processors and users. Site licensing is also available. Please Contact Empress for pricing.