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4GL RDBMS for developing standalone, cooperative and client/server
applications for end-user computing. Supports client/server access to
Gupta's SQLBase, Oracle and Microsoft's and Sybase's SQL Server in LAN
environment and Rdb and RMS in VAX/VMS environment. Includes end-user
reporting, data extraction tools and CUA-style developer's toolkit.Îïèñàíèå-Ò
Implements a 4GL for application development and end-user computing.
Provides an application development toolkit, a report writer,
comprehensive non-procedural and procedural languages, and a
multi-window capability with CUA-style action bars and pull-down menus
for the development of standalone, client/server, or cooperative
applications. Nomad Extended is suitable for developing large,
mission-critical LAN client/server-based applications. It
incorporates Rational System's DOS/16M Extender technology to break
the traditional 640K barrier of the DOS environment and to free up
memory for LAN software, emulators and other TSRs. Runs almost
exclusively in extended memory. Database definition features include
the Schema which defines relational databases to Nomad. Schema
statements are used to create database, define key lists and unique
record enforcement, create indexes, establish database password
checking, establish report headings, error message strings, and data
integrity constraints, and to define Nomad referential integrity
between tables and foreign keys. Integrity constraints are supported
for database items or &variables. Theses constraints establish a mask
pattern to which values must conform. Restricts values to those
specified for the primary key of a master, and specifies a range or
specific allowable values. These constraints also prohibit not
available messages, provide automatic verification of numeric values
for numeric fields, and provide automatic date verification. Data
types include alpha fixed or varying 1255 characters, numeric integer
or decimal, date, datetime, display, dump, logical, name, time, and
scientific notation. Any database item or variable can be specified
as an array. Fixed and varying array data structures are supported.ÒÅÐÌÈÍÛ