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The video tutorial discusses the concept of cross product in relational algebra, which is a basic operator used in relational databases. The tutorial demonstrates the cross product operation using a simple example with two relations or tables, each having attributes and tuples. It highlights the importance of relational databases in storing and managing data in table format. Additionally, it mentions different types of databases such as subject-oriented, hierarchy-oriented, network database, and entity relation. The focus remains on the cross product operation, which involves multiplying the attributes and tuples of two tables.