Step 1: Understand the symbol's meaning.
In relational algebra, the operator \( \times \) (cross symbol) denotes the Cartesian Product. This operation forms new tuples by combining each tuple from the first relation with every tuple from the second relation.
Step 2: Evaluate alternative operators.
Union (\(\cup\)) merges tuples from two relations, but necessitates identical schemas (same attributes).
Set Difference (\(-\)) subtracts tuples of one relation from another, also requiring identical schemas.
Intersection (\(\cap\)) identifies common tuples between two relations, also requiring identical schemas.
Cartesian Product (\(\times\)) does not impose schema constraints; it systematically pairs all tuples.
Final Answer: \[\boxed{\text{Cartesian Product}}\]