add Dev Part

DEV/DEV3.1/TP01/Exercise1/data.sql

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+CREATE TABLE Countries ( 
+    id INT PRIMARY KEY, 
+    name VARCHAR(30)
+);
+
+CREATE TABLE Votes (
+    id INT PRIMARY KEY AUTO_INCREMENT,
+    competitor_id INT REFERENCES Countries(id),
+    voter_id INT REFERENCES Countries(id),
+    points INT NOT NULL,
+    UNIQUE (competitor_id, voter_id)
+)
+
+INSERT INTO Countries VALUES (1, "France");
+INSERT INTO Countries VALUES (2, "Pays-Bas");
+INSERT INTO Countries VALUES (3, "Albanie");
+INSERT INTO Countries VALUES (4, "Italie");
+INSERT INTO Countries VALUES (5, "Russie");
+INSERT INTO Votes VALUES (2, 4, 5);
+INSERT INTO Votes VALUES (2, 5, 5);
+INSERT INTO Votes VALUES (4, 2, 16);
+INSERT INTO Votes VALUES (5, 2, 5);
+INSERT INTO Votes VALUES (5, 4, 8);