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Definition of "Cross Product" |
Cross Product is usually a database operation on two tables similar to a Join operation with the only difference is that the cross product will yield all the possible combinations between the two tables. Database Management Systems such as SQL Server and Oracle provided the cross product operation easily using the cross join keyword. The problem however in real life applications appears when we want to do cross product within the application logic. Suppose you have two arrays of numbers and you want to find out all the possible combinations of the two arrays together, then pick one of those combinations that meet your specific business needs. |
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