(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Request exclusive lock on relation

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Open relation file local

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Restore position

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Prepare undo

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Free all tuple locks on given relation

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Get next tuple from relation

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Rename a relation

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Perform SQL query

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Get an id number unique to a relation

(PHP 4 <= 4.1.0, PECL dbplus >= 0.9) Flush all changes made on a relation