MariaDB [matricula2]> show tables;
+----------------------+
| Tables_in_matricula2 |
+----------------------+
| alumcar              |
| alumno               |
| carrera              |
| matricula            |
| profcar              |
| profesor             |
+----------------------+
6 rows in set (0.001 sec)

MariaDB [matricula2]> select * from alumcar;
+---------+----------+
| codestu | codcarre |
+---------+----------+
| 001     | 002      |
| 003     | 005      |
| 005     | 001      |
| 001     | 005      |
+---------+----------+
4 rows in set (0.000 sec)

MariaDB [matricula2]> select *  from alumno;
+---------+------------------+-----------+----------+
| codestu | nombre           | direccion | telefono |
+---------+------------------+-----------+----------+
| 001     | Juan Tobon       | Cra 59    | 2335698  |
| 002     | Mario Gonzales   | Cra 89    | 6325984  |
| 003     | Federico Aguilar | Cra 26    | 4569782  |
| 004     | Angel Cuadrado   | Cra 44    | 6398521  |
| 005     | Catalina Escobar | Cra 78    | 4652300  |
| 006     | Paulina Borja    | Cra 45    | 4599632  |
+---------+------------------+-----------+----------+
6 rows in set (0.009 sec)

MariaDB [matricula2]> select * from carrera;
+----------+-------------------------+
| codcarre | carrera                 |
+----------+-------------------------+
| 001      | Ingenieria de Sistemas  |
| 002      | Contaduria              |
| 003      | Economia                |
| 004      | Derecho                 |
| 005      | Ingenieria Agropecuaria |
| 006      | Agronomia               |
| 007      | Ciencias de la salud    |
| 008      | Veterinaria             |
+----------+-------------------------+
8 rows in set (0.009 sec)

MariaDB [matricula2]> select * from matricula;
+----------+---------+----------+----------+---------------+
| codmatri | codestu | codcarre | codprofe | valorsemestre |
+----------+---------+----------+----------+---------------+
| 001      | 003     | 004      | 004      |       1800000 |
| 002      | 001     | 008      | 003      |       3500000 |
| 003      | 004     | 007      | 006      |       2800000 |
| 004      | 002     | 007      | 006      |       1950000 |
| 005      | 005     | 004      | 001      |       1800000 |
| 006      | 003     | 008      | 003      |       3500000 |
+----------+---------+----------+----------+---------------+
6 rows in set (0.001 sec)

MariaDB [matricula2]> select * from profcar;
+----------+----------+
| codprofe | codcarre |
+----------+----------+
| 005      | 003      |
| 002      | 006      |
| 005      | 005      |
| 003      | 008      |
| 005      | 001      |
| 004      | 002      |
| 003      | 001      |
| 004      | 004      |
| 001      | 004      |
| 006      | 007      |
+----------+----------+
10 rows in set (0.000 sec)

MariaDB [matricula2]> elect * from profesor;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'elect * from profesor' at line 1
MariaDB [matricula2]> select * from profesor;
+----------+----------------------+-----------+----------+
| codprofe | nombre               | direccion | telefono |
+----------+----------------------+-----------+----------+
| 001      | Pablo Juan Gutierrez | cra 45-96 | 2569856  |
| 002      | Enrique Saltamontes  | cra 25-63 | 2365914  |
| 003      | Portacio Cartagena   | cra 36-01 | 4596321  |
| 004      | Federico Aguilar     | cra 56-41 | 7895624  |
| 005      | Alberto Cifuentes    | cra 20-30 | 7895002  |
| 006      | Pascual Bravo        | cra 56-41 | 5698741  |
+----------+----------------------+-----------+----------+
6 rows in set (0.009 sec)

MariaDB [matricula2]> select profesor.codprofe,profesor.nombre,carrera.carrera from profesor,carrera,profcar where carrera.carrera='Ingenieria de Sistemas'and profesor.codprofe=profcar.codprofe and profcar.codcarre=carrera.codcarre;
+----------+--------------------+------------------------+
| codprofe | nombre             | carrera                |
+----------+--------------------+------------------------+
| 005      | Alberto Cifuentes  | Ingenieria de Sistemas |
| 003      | Portacio Cartagena | Ingenieria de Sistemas |
+----------+--------------------+------------------------+
2 rows in set (0.001 sec)

MariaDB [matricula2]> select profesor.codprofe,profesor.nombre,carrera.carrera,alumno.codestu,alumno.nombre from profesor,carrera,matricula,alumno where carrera.carrera='Derecho'and profesor.codprofe=matricula.codprofe and matricula.codcarre=carrera.codcarre and alumno.codestu=matricula.codestu;
+----------+----------------------+---------+---------+------------------+
| codprofe | nombre               | carrera | codestu | nombre           |
+----------+----------------------+---------+---------+------------------+
| 004      | Federico Aguilar     | Derecho | 003     | Federico Aguilar |
| 001      | Pablo Juan Gutierrez | Derecho | 005     | Catalina Escobar |
+----------+----------------------+---------+---------+------------------+
2 rows in set (0.001 sec)

MariaDB [matricula2]> select matricula.valorsemestre,carrera.carrera,alumno.codestu from alumno,carrera,matricula where carrera.carrera='Veterinaria' and alumno.codestu=matricula.codestu and carrera.codcarre=matricula.codcarre;
+---------------+-------------+---------+
| valorsemestre | carrera     | codestu |
+---------------+-------------+---------+
|       3500000 | Veterinaria | 001     |
|       3500000 | Veterinaria | 003     |
+---------------+-------------+---------+
2 rows in set (0.001 sec)

MariaDB [matricula2]> select alumno.nombre,profesor.nombre from alumno,profesor,matricula where profesor.nombre='Portacio Cartagena' and alumno.codestu=matricula.codestu and profesor.codprofe=matricula.codprofe;
+------------------+--------------------+
| nombre           | nombre             |
+------------------+--------------------+
| Juan Tobon       | Portacio Cartagena |
| Federico Aguilar | Portacio Cartagena |
+------------------+--------------------+
2 rows in set (0.001 sec)

MariaDB [matricula2]> select max(valorsemestre)'Valor del semestre mas alto' from matricula;
+-----------------------------+
| Valor del semestre mas alto |
+-----------------------------+
|                     3500000 |
+-----------------------------+
1 row in set (0.001 sec)

MariaDB [matricula2]> select avg(valorsemestre)'Promedio del Valor semestre ' from matricula;
+------------------------------+
| Promedio del Valor semestre  |
+------------------------------+
|           2558333.3333333335 |
+------------------------------+
1 row in set (0.001 sec)

MariaDB [matricula2]> select alumno.nombre from alumno where nombre like 'A%' Or nombre like '%R';
+------------------+
| nombre           |
+------------------+
| Federico Aguilar |
| Angel Cuadrado   |
| Catalina Escobar |
+------------------+
3 rows in set (0.001 sec)

MariaDB [matricula2]> select carrera.carrera,sum(matricula.valorsemestre)'total' from matricula inner join carrera on carrera.codcarre=matricula.codcarre group by carrera.carrera order by carrera.carrera;
+----------------------+---------+
| carrera              | total   |
+----------------------+---------+
| Ciencias de la salud | 4750000 |
| Derecho              | 3600000 |
| Veterinaria          | 7000000 |
+----------------------+---------+
3 rows in set (0.001 sec)

MariaDB [matricula2]> select alumno.nombre from alumno left join matricula on matricula.codestu=alumno.codestu where matricula.codestu is null;
+---------------+
| nombre        |
+---------------+
| Paulina Borja |
+---------------+
1 row in set (0.001 sec)

MariaDB [matricula2]>