Product Overview

Application Data Access for ClearPath MCP systems is based on the Microsoft ODBC programming interface. By using Application Data Access, application programs on a ClearPath MCP server can execute a subset of standard ODBC function calls, including the ability to use standard SQL statements, against any database on Windows platforms that provide an ODBC driver.

This capability includes all major databases on all Windows platforms—ranging from simple PC databases to enterprise databases such as Oracle. Regardless of where your corporate information is located, it is accessible to your ClearPath MCP system.

The following figure shows how the program components interact.

General Features

COBOL, ALGOL, and C applications make calls to Application Data Access to submit standard ODBC and SQL requests, which are then passed on to the ODBC driver manager for access to any configured data source.

Access is not restricted to retrieval. Application Data Access MCP applications can also update data in databases and files in the enterprise that are not related to Unisys.

The Application Data Access API is a subset of the ODBC version 2 specification. It includes a few calls to establish the initial connections to the Windows server to control buffering and to handle internationalization.

The Application Data Access API functions for C programs are identical to the ODBC counterparts. Ported C applications should work with very minimal changes. Because the ODBC interface is a C interface and the COBOL language does not support pointers or functions, the API for COBOL and ALGOL programs is designed to suit the requirements of those languages.

The API resides in the MCP Environment. It is implemented as a library.

Ordering Information

Source code is not available for this product.

Product Information

Refer to the Application Data Access User’s Guide (4310 5931) for more information.