add files

Author: kristian9577

01.Data Definition And Data Types - Lab/01.CreateNewDatabase.sql

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+CREATE DATABASE gamebar;

01.Data Definition And Data Types - Lab/02.Create Tables.sql

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+CREATE TABLE employees(
+	id INT(11) PRIMARY KEY AUTO_INCREMENT,
+    first_name VARCHAR(255) NOT NULL,
+    last_name VARCHAR(255) NOT NULL
+);
+
+CREATE TABLE categories(
+	id INT(11) PRIMARY KEY AUTO_INCREMENT,
+    name VARCHAR(255) NOT NULL
+);
+
+CREATE TABLE products(
+	id INT(11) PRIMARY KEY AUTO_INCREMENT,
+    name VARCHAR(255) NOT NULL,
+    category_id INT(11) NOT NULL
+    
+);

01.Data Definition And Data Types - Lab/03.Insert Data in Tables.sql

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+INSERT INTO employees (first_name, last_name) values ('Pesho', 'Peshov');
+INSERT INTO employees (first_name, last_name) values ('Gosho', 'Goshov');
+INSERT INTO employees (first_name, last_name) values ('Tosho', 'Toshov');

01.Data Definition And Data Types - Lab/04.Alter Table.sql

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+ALTER TABLE employees
+
+ADD middle_name VARCHAR(255);

01.Data Definition And Data Types - Lab/05.Adding Constraints.sql

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+ALTER TABLE products
+ADD CONSTRAINT FK_category_id
+FOREIGN KEY (category_id) REFERENCES categories(id);

01.Data Definition And Data Types - Lab/06.Modifying Columns.sql

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+ALTER TABLE employees
+MODIFY COLUMN middle_name VARCHAR(100);