Cbse 10th IT Half Year Exam Question Paper
Cbse 10th IT Half Year Exam Question Paper *Each question carries 1 marks* *solve any 40 questions out of 45 questions* Q.1. Which of the following is a type of DBMS model? a) Relational b) Network c) Hierarchical d) All of the above Q.2. Which of the following is used to organize a database in DBMS? a) Table b) Views c) Query d) All of the above Q.3. Which model uses a tree structure to represent relationships among data? a) Relational Model b) Network Model c) Hierarchical Model d) Object - Oriented Model Q.4. What SQL statement retrieves data from a database? a) SELECT b) INSERT c) UPDATE d) DELETE Q.5. What does normalization in a relational database help with? a) Avoiding redundancy b) Increasing performance c) Reducing query time d) All of the above Q.6. What is a primary key used for? a) Uniquely identify a record in a table b) Enforce relationships between tables c) Prevent data duplication d) All of the above Q.7. Which of the following is NOT a type of relationship...