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Okay, well I had to find out now. This is info from Statcan, keep in mind this is in reference to federal stats for crimes, but they are all probably connected to this database maybe…
"Coverage of the UCR aggregate data reflects virtually 100% of the total caseload for all police services in Canada. One incident can involve multiple offences. In order to ensure comparability, counts presented in this article are based upon the most serious offence in the incident as determined by a standard classification rule used by all police services. Counts based upon all violations are available upon request.
Each year, the UCR database is “frozen” at the end of May for the production of crime statistics for the preceding calendar year. However, police services continue to send updated data to Statistics Canada after this date for incidents that occurred in previous years. Generally, these revisions constitute new accused records, as incidents are solved and accused persons are identified by police. However, some new incidents may be added and previously reported incidents may be deleted as new information becomes known."
"Data from the Uniform Crime Reporting Survey are used to calculate both the traditional crime rate and the Crime Severity Index (CSI). Both the traditional crime rate and the CSI are based on the aggregate count of criminal incidents. A criminal incident involves one or more related offences that are committed during a single criminal event and have been reported to and substantiated by police. Where there are multiple victims within a single criminal event, a separate aggregate incident is counted for each victim. For example, a single incident involving an assault on three victims at the same time and location is counted in the aggregate statistics as three incidents of assault."
http://www.statcan.gc.ca/pub/85-002-x/2014001/article/14040-eng.htm?fpv=2693#a9
"Coverage of the UCR aggregate data reflects virtually 100% of the total caseload for all police services in Canada. One incident can involve multiple offences. In order to ensure comparability, counts presented in this article are based upon the most serious offence in the incident as determined by a standard classification rule used by all police services. Counts based upon all violations are available upon request.
Each year, the UCR database is “frozen” at the end of May for the production of crime statistics for the preceding calendar year. However, police services continue to send updated data to Statistics Canada after this date for incidents that occurred in previous years. Generally, these revisions constitute new accused records, as incidents are solved and accused persons are identified by police. However, some new incidents may be added and previously reported incidents may be deleted as new information becomes known."
"Data from the Uniform Crime Reporting Survey are used to calculate both the traditional crime rate and the Crime Severity Index (CSI). Both the traditional crime rate and the CSI are based on the aggregate count of criminal incidents. A criminal incident involves one or more related offences that are committed during a single criminal event and have been reported to and substantiated by police. Where there are multiple victims within a single criminal event, a separate aggregate incident is counted for each victim. For example, a single incident involving an assault on three victims at the same time and location is counted in the aggregate statistics as three incidents of assault."
http://www.statcan.gc.ca/pub/85-002-x/2014001/article/14040-eng.htm?fpv=2693#a9