Btrieve Updates Overview

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The new Btrieve login API brings the database concept to the Btrieve interface. It allows access to a Btrieve database without requiring the user to have operating system rights to the physical location of the database files.

The purpose of this chapter is to define the Btrieve login APIs and the database URIs that can be used as parameters in the API to access a Btrieve database resource.

To provide additional convenience and support for the Btrieve database concept discussed in New Security Models for Btrieve Applications , this release offers new Btrieve operations for explicit database Login and Logout. In addition, this release offers the ability to login implicitly to a database with a Create or Open operation using a new type of entry in the Btrieve key buffer.

Backwards Compatibility Issues

• The new requester works with previous versions of Pervasive.SQL. However, status 1 (invalid operation error) is returned by the client requester for Btrieve Login/Logout operations when connecting to engines previous to this release. It is up to the application to decide whether to proceed.
• The database URI will not be recognized by engines previous to this release.