Rules of snooker Rules of snooker Snooker is a cue sport that is played on a baize-covered table with pockets in each of the four corners and in the middle of each of the long side cushions. It is played using a cue and snooker balls: one white , 15 worth one point each (sometimes played with fewer red balls, commonly 6 or 10), and six balls of different : yellow (2 points), green (3), brown (4), blue (5), pink (6), black (7). A player (or team) wins a (individual game) of snooker by scoring more points than the opponent(s), using the cue
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