Rappels des concepts fondamentaux - smis inria

Exemple Embedded SQL
Exemple JDBC
EXEC SQL DECLARE C1 CURSOR FOR
SELECT NumDoc, NomDoc
FROM DOC
WHERE VilleDoc = ‘Versailles’;
import java.sql.*;
...
class JdbcTest {
static String BD_URL = "jdbc:oracle:@nomBDRoute";
main()
{
EXEC SQL BEGIN DECLARE SECTION
char sqlstate[6], NomDoc[21], VilleDoc[31];
int NumDoc;
EXEC SQL END DECLARE SECTION
}
EXEC SQL OPEN C1 ;
while (notEndofResult(sqlstate) {
EXEC SQL FETCH C1 INTO :NumDoc, :NomDoc;
...
}
EXEC SQL CLOSE C1 ;
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public static void main (String args [])
throws SQLException, ClassNotFoundException, IOException
{
}
}
Class.forName ("oracle.jdbc.OracleDriver");
Connection BDRoute;
BDRoute =DriverManager.getConnection(BD_URL, "MonNom", "MonPass");
Statement Trajet = BDRoute.createStatement ();
ResultSet ResTrajet = Trajet.executeQuery
("SELECT * FROM Route WHERE Depart = ‘Paris’");
while ( ResTrajet.next() )
{ System.out.println (ResTrajet.getString ("Arrivee")); }
ResTrajet.close();
Trajet.close();
BDRoute.close();
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Exemple : Oracle PL/SQL
Curseurs PL/SQL : exemple
• Procédure Anonyme
Client
PL/SQL
Moteur
PL/SQL
• Procédure stockée (invocation directe)
Client
RPC
Moteur
PL/SQL
• Procédure stockée (invocation indirecte)
Client
Mise à jour SQL
Moteur
PL/SQL
Serveur
SQL
Serveur
SQL
Serveur
SQL
BD
BD
BD
PL/SQL
trigger
PL/SQL
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DECLARE
CURSOR Compta IS
SELECT nom, salaire FROM Employe WHERE service = ‘comptabilité’;
Emp Compta%ROWTYPE;
BEGIN
OPEN Compta;
FETCH Compta INTO Emp;
WHILE Compta%FOUND LOOP
IF Emp.salaire IS NOT NULL AND Emp.Salaire < 30.000 THEN
UPDATE Employe SET salaire = salaire * 1,05 WHERE nom = Emp.nom
END IF;
FETCH Compta INTO Emp;
END LOOP;
CLOSE C;
END;
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