Abstract: A sway sensing and notification device includes a sway sensor for sensing swaying of a towed vehicle and generating corresponding sway data; and a computing device coupled with the sway sensor for analyzing the sway data and determining when the swaying of the towed vehicle could result in an unstable driving condition. The device may also include a notification device coupled with the computing device for alerting an operator when the computing device determines that the swaying of the towed vehicle could result in an unstable driving condition.

Abstract: A method of processing information relating to the execution of instructions by a database management system includes receiving an instruction; receiving execution information relating to the execution of the instruction by the database management system; comparing the instruction to one or more previously received instructions and determining whether, according to a predetermined equivalence criterion, the instruction matches one of the previously received instructions; and, if the instruction matches a previously received instruction, combining the execution information with execution information relating to the matching one of the previously received instructions to produce aggregate execution information. The aggregate information may be used, for example, in analysing and optimizing performance characteristics of the database management system, the databases under its control, and individual instructions.

Abstract: A system for and method of processing information relating to the execution of instructions by a database management system is disclosed. The method comprises receiving an instruction; receiving execution information relating to the execution of the instruction by the database management system; comparing the instruction to one or more previously received instructions and determining whether, according to a predetermined equivalence criterion, the instruction matches one of the previously received instructions; and, if the instruction matches a previously received instruction, combining the execution information with execution information relating to the matching one of the previously received instructions to produce aggregate execution information. The aggregate information may be used, for example, in analysing and optimizing performance characteristics of the database management system, the databases under its control, and individual instructions.