Creating a Simple Database

Learning Objectives Define key database terminology including table, field, record, and primary key. Design a simple database schema for a given scenario by identifying necessary fields and appropriate data types. Write SQL `CREATE TABLE` statements to implement a database schema. Write SQL `INSERT INTO` statements to populate a table with data. Write basic SQL `SELECT` statements to retrieve specific data from a table. Explain the purpose of a primary key in ensuring unique identification for each record. How does Netflix remember what you've watched, or how does a game save your high score? 🎮 The secret is a database! In this lesson, you'll learn the fundamental concepts behind databases, the organized systems that power almost every app you use. We'll use...

TermDefinitionExample Table (or Relation)A collection of related data organized into a grid of rows and columns. Think of it like a single spreadsheet in a workbook.A `Students` table in a school database, where each row is a student and each column is a piece of information like `FirstName` or `Grade`. Field (or Column)A single category of data in a table that appears in every record. It defines the type of information stored in that column.In a `Students` table, `StudentID`, `FirstName`, and `DateOfBirth` are all fields. Record (or Row)A single entry in a table, containing all the data for one specific item. It's one complete row of information.In a `Students` table, the row containing `101`, `'Alice'`, `'Smith'`, and `'2008-05-12'` is one record. Prim...

CREATE TABLE Syntax CREATE TABLE table_name (column1 datatype, column2 datatype, PRIMARY KEY(column_name)); Use this command to define the structure of a new table. You must specify the table's name and define each column with its name and the type of data it will hold (e.g., INT, TEXT). It's best practice to explicitly define a primary key. INSERT INTO Syntax INSERT INTO table_name (column1, column2) VALUES (value1, value2); Use this command to add a new record (row) to an existing table. You list the columns you are providing data for, and then the corresponding values in the same order. Text values must be enclosed in single quotes. SELECT Syntax SELECT column1, column2 FROM table_name; Use this command to retrieve data from a table. You specify which co...