Adding SQL files for lab 2

sql/dummy_data.sql

+INSERT INTO artist (id, first_name, last_name)
+
+        VALUES (NULL, 'Michael','Jackson'),(NULL, 'Taylor','Swift');
+
+
+
+INSERT INTO record( title, artist_id, genre, year, price)
+
+        VALUES ('Thriller',1,'Pop',1983,4.95),
+
+               ('Bad Blood',1,'Pop',2014,3.99)
+
+

sql/practice_queries.sql

+/*SELECT first_name, last_name FROM artist;*/
+
+
+
+
+
+SELECT title FROM record WHERE year = 2014;
+
+

sql/record-store.sql

+DROP TABLE IF EXISTS artist, record, customer, transaction;
+
+CREATE TABLE artist
+(
+    id INT AUTO_INCREMENT,
+    first_name VARCHAR(50),
+    last_name VARCHAR(50),
+    PRIMARY KEY(id)
+);
+
+
+CREATE TABLE record
+(
+    id INT AUTO_INCREMENT,
+    title VARCHAR(50),
+    artist_id INT,
+    genre TINYTEXT,
+    year YEAR(4),
+    price DECIMAL(10, 2) unsigned,
+    PRIMARY KEY (id),
+    FOREIGN KEY(artist_id)
+        REFERENCES artist(id)
+
+);
+
+CREATE TABLE customer
+(
+   id INT AUTO_INCREMENT,
+   first_name VARCHAR(50),
+
+   last_name VARCHAR(50),
+
+   PRIMARY KEY (id)
+
+);
+
+
+
+CREATE TABLE transaction
+
+(
+
+   id INT AUTO_INCREMENT,
+
+   customer_id INT,
+
+   record_id INT,
+
+   PRIMARY KEY (id),
+
+   FOREIGN KEY (customer_id)
+
+        REFERENCES customer (id),
+
+   FOREIGN KEY (record_id)
+
+        REFERENCES record (id)
+
+);