Podcast
Questions and Answers
What does DDL stand for in the context of SQL?
What does DDL stand for in the context of SQL?
Which command is used to permanently remove a table from the database in SQL?
Which command is used to permanently remove a table from the database in SQL?
What does DML stand for in the context of SQL?
What does DML stand for in the context of SQL?
Which SQL command is used to make changes to an existing table structure?
Which SQL command is used to make changes to an existing table structure?
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In SQL, which keyword is used to specify the conditions for selecting rows from a table?
In SQL, which keyword is used to specify the conditions for selecting rows from a table?
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What is the purpose of the SQL query 'Select * From Employees Where Not Nationality = ‘Egyptian’ ;'?
What is the purpose of the SQL query 'Select * From Employees Where Not Nationality = ‘Egyptian’ ;'?
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What does the SQL query 'Select * From Employees Where Emp_Name Like ‘A%’ ;' do?
What does the SQL query 'Select * From Employees Where Emp_Name Like ‘A%’ ;' do?
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What does the SQL query 'Select * From Employees Where Emp_Name Like ‘Z%B’ ;' retrieve?
What does the SQL query 'Select * From Employees Where Emp_Name Like ‘Z%B’ ;' retrieve?
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What is the outcome of the SQL query 'Select Max (Salary) as Max , Min (Salary) as Min , Avg (Salary) as Average From Employees ;'?
What is the outcome of the SQL query 'Select Max (Salary) as Max , Min (Salary) as Min , Avg (Salary) as Average From Employees ;'?
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What does the SQL query 'Select Distinct (FUN) as Functions From Employees ;' do?
What does the SQL query 'Select Distinct (FUN) as Functions From Employees ;' do?
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Study Notes
SQL Fundamentals
- DDL stands for Data Definition Language, used to create and modify database structures.
SQL Commands
- The DROP command is used to permanently remove a table from the database.
SQL Fundamentals
- DML stands for Data Manipulation Language, used to perform operations on data in a database.
SQL Commands
- The ALTER command is used to make changes to an existing table structure.
SQL Queries
- The WHERE keyword is used to specify the conditions for selecting rows from a table.
SQL Queries
- The SQL query 'Select * From Employees Where Not Nationality = ‘Egyptian’ ;' selects all rows from the Employees table where the Nationality is not 'Egyptian'.
SQL Queries
- The SQL query 'Select * From Employees Where Emp_Name Like ‘A%’ ;' selects all rows from the Employees table where the Emp_Name starts with the letter 'A'.
SQL Queries
- The SQL query 'Select * From Employees Where Emp_Name Like ‘Z%B’ ;' retrieves all rows from the Employees table where the Emp_Name starts with 'Z' and has 'B' in it.
SQL Queries
- The SQL query 'Select Max (Salary) as Max , Min (Salary) as Min , Avg (Salary) as Average From Employees ;' retrieves the maximum, minimum, and average salary from the Employees table.
SQL Queries
- The SQL query 'Select Distinct (FUN) as Functions From Employees ;' retrieves unique values from the FUN column (representing functions) in the Employees table.
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Description
This quiz covers the basics of SQL (Structure Query Language) including its data definition, manipulation, control, and transaction control capabilities. Topics include creating, dropping, altering tables, inserting, updating, and deleting data, as well as granting and revoking permissions.
