Is DBMS useful after completing an MCA?

A DBMS organises and manages structured data. MCA students should understand tables, relationships, keys, transactions, normalisation and query processing because database knowledge appears in many software roles. For an MCA learner, the best way to understand DBMS is to connect the theory with a small working example. This point is specifically relevant to the DBMS aspect of MCA study. For this specific question about DBMS, the practical takeaway is to relate the concept to your own MCA learning goal.