Specifications

Introduction to the OpenVMS Programming Environment

1.4 OpenVMS Support for Object-Oriented Design

The OpenVMS operating system supports the object-oriented design of

applications through its support of the C++ programming language and such

Digital application-development products as ObjectBroker (formerly named DEC

ACA Services) and DEC Forté. These products support object-oriented design but

are not limited to that style. A major feature of ObjectBroker is that it facilitates

the development of distributed applications. For more information about these

products, see the references listed in Table 1–2.

Table 1–2 More Information on Products That Support Object-Oriented Design

For more information on... Refer to...

ObjectBroker Section 3.4.2

C++ Section 7.8

DEC Forté Section 1.6

1.5 Database and Transaction Processing Support

OpenVMS systems support many Digital database and transaction processing

(TP) products and similar products from other vendors.

1.5.1 Database Support

The Record Management Services (RMS), a subsystem of OpenVMS, is a

collection of routines that give programmers a device-independent method

for storing, retrieving, and modifying data. RMS routines are described in

Section 10.5.

In addition to supporting many third-party database management systems,

OpenVMS supports two Digital database management systems: DEC Rdb and

DEC DBMS. DEC Rdb is a relational database management system and can

be used for distributed database applications. DEC Rdb includes the Standard

Query Language (SQL) and SQL Services.

Examples of the DEC Rdb product family and related products are shown in

Table 1–3.

Table 1–3 Examples of DEC Rdb Products and Related Products

Product Description

DEC RdbAccess for RMS Enables transparent read and write access to OpenVMS RMS

ﬁles

DEC RdbAccess for

ORACLE on OpenVMS

Enables read-only access to ORACLE databases on local or

remote OpenVMS systems

DECquery for MS–DOS Enables PC users, who do not know SQL, to query a database

DEC RALLY Provides a fourth-generation language environment for

generating Rdb applications

DEC DBMS is a general-purpose, high-performance database management

system. It is designed to handle high transaction volumes and is CODASYL-

compliant.

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