What does the SELECT statement do in SQL?

It queries and retrieves data from the database

It modifies the structure of the database

It creates new tables in the database

It inserts new records into the database

What is the purpose of the DELETE command in SQL?

To remove records from the database

What is the role of the UPDATE command in SQL?

To modify existing records in the database

To delete records from the database

What is the purpose of the Data Control Language (DCL) in a database?

To control access to data in the database

What is the purpose of the ALTER command in SQL?

To modify the structure of an existing table

To delete records from the database

What is the role of the Data Dictionary in a database?

To store metadata about the database

To control access to data in the database

What is the purpose of the LEFT JOIN command in SQL?

To return all records from the left table, and the matched records from the right table

What is the purpose of the CREATE command in SQL?

To modify the structure of an existing table

To delete records from the database

What is the function of the DROP command in SQL?

To delete an existing table from the database

What is the purpose of the TRUNCATE command in SQL?

To delete all records from a table, but not the table itself

What is the function of the UNION command in SQL?

To combine the result set of two or more SELECT statements

What is the role of the Data Independence in a database?

To allow system-level data to be changed without affecting application-level data

To store metadata about the database

To control access to data in the database

What is the purpose of the RIGHT JOIN command in SQL?

To return all records from the right table, and the matched records from the left table

What is the function of the PRIMARY KEY in a database?

To uniquely identify each record in a table

What is the role of the Data Modification Language (DML) in a database?

To insert, update or delete data in the database

To control access to data in the database

Database Management Quiz

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Database Management Quiz

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9th - 12th Grade

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To manipulate and query the database

To add new records into the database

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Database Management Quiz

25 questions

What is the primary key used for in a database?

What is the purpose of the Data Definition Language (DDL) in a database?

What is the main advantage of using a relational database over flat files?

What is the purpose of the Structured Query Language (SQL) in a database?

What is the role of the Database Administrator (DBA) in a database management system?

What is the purpose of the INNER JOIN command in SQL?

What is the function of the INSERT command in SQL?

What does the SELECT statement do in SQL?

What is the purpose of the DELETE command in SQL?

What is the role of the Data Manipulation Language (DML) in a database?

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