SQL

Question 1

What is a primary key?

Answer 1

A unique ID to identify a row in the same tabel

Question 2

What are 4 primare SQL operations

Answer 2

1. Insert
2. Select
3. Update
4. Delete

Question 3

What is a foreign key

Answer 3

A key that can identify a unique row in another table.

Question 4

What is a SQL injection?

Answer 4

is the placement of malicious code in SQL statements, via web page input. SQL injection is one of the most common web hacking techniques. SQL injection is a code injection technique that might destroy your database.

So place user input outside of the SQL Query