Which of the following are disadvantages of DBMS?

Explanation

Here are the options, along with explanations for why each option is correct:(A) System overhead - This is correct. DBMS software can require significant computing resources, which can slow down other applications running on the same system. Additionally, the complexity of DBMS software can make it more expensive to maintain than simpler file-based systems.(B) Training of staff - This is correct. Because DBMS software is complex, it can require specialized training for users and administrators. This can be a time-consuming and expensive process.(C) Need of data dictionary - This is correct. A data dictionary is a catalog that stores information about the data in a DBMS, such as data types, constraints, and relationships between tables. While a data dictionary is essential for managing a DBMS effectively, it adds to the complexity of the system and requires additional effort to maintain.(D) All of these - This is also correct. All of the above options (system overhead, training of staff, and need for a data dictionary) are disadvantages of DBMS.So, the best answer is (D) All of these