29 items
Relational Model and Tables
Relational vs Non-Relational
Meaning of NULL
Popular Relational Databases
DBMS Definition and Purpose
Rows and Columns
Primary Key Concept
What Is a Database
What a Schema Is
Categories of SQL Commands
What SQL Stands For
Common SQL Data Types
Basic SELECT Structure
Foreign Keys and Relationships
Tables, Rows, and Columns
Database Management System (DBMS)
Primary Key
NULL Values
Relational Database Concept
Table Relationships
SQL vs NoSQL
Database Data Types
Common Relational Databases
Constraints
Schema Definition
Foreign Key
What SQL Is
A primary key uniquely identifies each row in a table.
What is the main role of a primary key in a table?