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Hello friends, welcome to Gate Smashers the topic is cross product in relational algebra. cross product is basic operator in relational algebra I have told you in earlier videos, here we are seeing cross product by executing with a simple example. here I have first taken two relations, relation means table because we are talking about rdms relational database where we store our data in the form of table that is what a type of database. there can be different types of database subject oriented database hierarchy oriented database network database entity relation, there are various types of database that we can use to represent the data. here we are using relational database which is used most, so R1 and R2 are two tables we can call it was relation or simply table here I have taken 3 attributes ABC and there are two rows which we also call tuples here also there are three attributes, and 2 tuples here we are talking about cross product. if you talk about cross product we can multiply...
