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SQL mcq(multiple choice) question with answers
SQL MCQ (Multiple Choice Question) with answers
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SQL (Structured Query Language) is a programming language used to manage and manipulate relational databases. It is a standard language used to communicate with databases and perform operations such as inserting, updating, deleting, and retrieving data.
SQL was first developed by IBM in the 1970s and has since become a standard language used by most database management systems. SQL is used in various industries, including finance, healthcare, retail, and many others.
SQL has several important components, including:
- Data Definition Language (DDL): Used to define the structure of the database, including tables, columns, and constraints.
- Data Manipulation Language (DML): Used to manipulate the data stored in the database, including inserting, updating, and deleting records.
- Data Query Language (DQL): Used to retrieve data from the database using various commands such as SELECT, FROM, WHERE, and JOIN.
- Data Control Language (DCL): Used to control access to the database and its objects, including granting and revoking permissions to users.
1. What does SQL stand for?
2. Which SQL command is used to get data from a table?
3. Which command is used to add data to SQL table?
4. Which command is used to modify existing data in SQL?
5. Which of the following SQL statements is used to retrieve data from a database?
6. Which of the following SQL clauses is used to specify the conditions that must be met to retrieve data from a database?
7. Which of the following SQL statements is used to add new data to a database?
8. Which of the following SQL functions is used to count the number of rows in a table?
9. Which of the following SQL statements is used to delete data from a database?
10. Which of the following SQL clauses is used to sort the retrieved data in ascending or descending order?
11. Which of the following SQL functions is used to find the highest value in a column?
12. Which of the following SQL clauses is used to group the retrieved data by one or more columns?
13. Which of the following SQL functions is used to calculate the average value in a column?
14. Which SQL keyword is used to remove duplicates from a result set?
15. Which SQL function is used to return the current date and time?
16. Which SQL keyword is used to sort the result set in descending order?
17. Which SQL keyword is used to join two or more tables?
18. Which SQL keyword is used to retrieve only distinct values?
19. Which SQL statement is used to insert new data into a table?
20. Which SQL keyword is used to retrieve data from multiple tables?
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