Relational Algebra Operations

Step 1: Recall union property.
The union of two relations includes all tuples that appear in either relation, but removes duplicates.
Step 2: Combine TableA and TableB.
From TableA: From TableB:
Step 3: Apply union and remove duplicates.
Combining both sets, we get: Notice that is duplicated, so it is kept only once.
Step 4: Match with options.
The correct table is:
Final Answer:

Step 1: Recall the symbol meaning.
In relational algebra, the operator (cross symbol) represents the Cartesian Product. This combines every tuple of the first relation with every tuple of the second relation.
Step 2: Why not the others?

Union ( ) combines tuples from two relations, but requires the same schema (same attributes).
Set Difference ( ) removes tuples of one relation from another, also requiring the same schema.
Intersection ( ) gives common tuples of two relations, also requiring the same schema.
Cartesian Product ( ) does not require the same schema; it simply pairs all tuples.

Final Answer: