- What is the difference between SQL and MySQL?
- What do you mean by DBMS? What are its different types?
- What are the types of joins in SQL? Give an example for each one.
- What is a Primary key?
- What are the different operators available in SQL?
- What is the need for group functions in SQL?
- What is a Relationship and what are they?
Please discuss these questions with your partners and post your answers as a comment on this gist when you are finished.
Q1 SQL is a query language, MySQL is a relational database that uses SQL to query a database
Q2 DBMS Database Management Systems. It is a software system that allows users to store, modify, and extract data from a database.
Types of DBMS:
1-Relational database.
2-Object oriented database.
3-Hierarchical database.
4-Network database.
Q3 A primary key is a field in a database table that uniquely identifies each record in the table.
Q4
Types of SQL operators:
1- comparison operators ( =, <, >, <=, >=, <>)
2- logical operators (AND, OR, NOT)
3- arithmetic operators (+, -, *, /)
4- string operators (LIKE, IN, BETWEEN)
Q5 SQL are used to perform calculations
Q6
Tables Relations in SQL Server:
One-to-One,
One-to-Many,
Many-to-Many,