The Full Stack Web Development - An Overview of SQL

The video tutorial introduces SQL, a declarative programming language used for managing data in relational databases. It covers SQL's language elements, including clauses, expressions, and statements, and explains primary and foreign keys. The tutorial also discusses auto increment and default constraints, and common SQL operations such as select, insert, update, and delete. The video prepares viewers for installing MySQL and writing SQL queries.

What does SQL stand for?

• Systematic Query Language

• Sequential Query Language

• Simple Query Language

• Structured Query Language

Which of the following is NOT a component of SQL language elements?

• Predicates

• Clauses

• Functions

• Expressions

What is the purpose of a primary key in a SQL table?

• To allow duplicate values

• To uniquely identify each record

• To store null values

• To automatically increment values

What happens when a field is set to auto-increment?

• It prevents null values

• It sets a default value

• It generates a unique number for each new record

• It allows duplicate values

Which SQL operation is used to retrieve data without modifying the database?

• DELETE

• UPDATE

• SELECT

• INSERT

Which clause is used to filter records in a SQL query?

• JOIN

• BETWEEN

• LIKE

• WHERE

What does the LIKE operator do in a SQL query?

• Combines rows from multiple tables

• Searches for a specific pattern

• Specifies multiple values

• Selects values within a range