SQL is used to retrieve and manage relational data. A strong MCA learner should practise SELECT queries, joins, grouping, subqueries, transactions and basic database design. This makes SQL more valuable when it is supported by hands-on practice and a clear explanation of what you built. This point is specifically relevant to the SQL aspect of MCA study. For this specific question about SQL, the practical takeaway is to relate the concept to your own MCA learning goal. In other words, this guidance addresses: Does an online MCA include SQL?