(PECL mongo >=0.9.0) Returns this file's filename

(PECL mongo >=1.3.0) Get the read preference for this collection

(PECL mongo >= 0.8.0) Returns a hexidecimal representation of this id

(PECL mongo >=0.9.0) Return the next file to which this cursor points, and advance the cursor

(PECL mongo >=0.9.0) Creates a new database

(PECL mongo >=0.9.4) Sets whether this query can be done on a secondary [deprecated]