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Hello friends, Welcome to Gate Smashers the topic is Joins Joins is a very important topic of DBMS and joins is covered in relational algebra as well as in sequel algebra means the relational algebra what is it? It is mathematical expression means the sequel which we actually implement how do we implement? in structured query language but in relational algebra joins has its own syntax and in sequel has separate syntax obviously because sequel is an implementation language actually the concept is relational algebra where we denote joins with mathematical expressions but when we come to sequel the same mathematical expressions we write in the form of SQL commands so there is only one concept the joins whether we talk about relational algebra or about sequel joins is only one there is only one concept but the way of writing it, syntax is different relational algebra has different syntax sequel has different syntax so here if we talk first, joins What are joins? It is clear from the name