# 1Multiple Choice1. Which system is designed to manage and store a large amount of data?A. LOGICAL SCHEMAB. RELATIONAL DATABASEC. DATABASE SYSTEMD. DATA STORAGE SYSTEM
# 2Multiple Choice2. What is the feature that allows modifying a schema without affecting other levels of a database?a) Data independenceb) Integrity constraintsc) Atomicityd) Data isolation
# 3Multiple Choice3. Which of the following languages is used to manipulate data within a database?a) DMLb) DDLc) SQLd) DQL
# 4Multiple Choice4. Which language allows users to define the structure of a database?A. SQLB. DMLC. DQLD. DDL