Snooker season 2009/2010 Snooker season 2009/2010 The snooker season 2009/10 was a series of snooker tournaments played between 16 May 2009 and 8 May 2010. There were six ranking events, two less than in the previous season. The Bahrain Championship was not held again, and the Northern Ireland Classic was removed from the calendar too. The Jiangsu Classic was held for the first time. Note: new means in these case, that these players were not on the 2008/2009 professional Main Tour. The following table outlines the results and dates for all the ranking and major invitational events. The top 16 of the world
Many-to-many (data model) Many-to-many (data model) In systems analysis, a many-to-many relationship is a type of cardinality that refers to the relationship between two entities A and B in which A may contain a parent instance for which there are many children in B and vice versa. For example, think of A as Authors, and B as Books. An Author can write several Books, and a Book can be written by several Authors. In a relational database management system, such relationships are usually implemented by means of an associative table (also known as junction table or "cross-reference table"), say, AB with two one-to-many