Top 210+ SQL Interview Questions and Answers in 2023

SQL(Structured Query Language) for storing, manipulating and retrieving data in databases.

SQL is RDBMS.

RDBMS is a database management system (DBMS) that is based on relational model as introduced by E.F.Code.

It is a DBMS in which the database is organized and accessed according to the relation between data.

In a relational database, relationships between two or more tables by primary and foreign key.

Example- SQL, Orcle, Mysql, Mysql server

Advantage
1-Simple and easy.
2-Faster Query Processing.
3-Standard Language.
4-Portable.
5-Interactive Language.
6-Multiple data views.

Disadvantage
1. Difficult Interface
2. Cost Inefficient
3. Partial Control