mysql> show tables;
ERROR 1046 (3D000): No database selected
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| automoviles        |
| biblioteca         |
| cdcol              |
| factura            |
| libreria           |
| mysql              |
| performance_schema |
| phpmyadmin         |
| test               |
| webauth            |
+--------------------+
11 rows in set (0.21 sec)

mysql> create database TALLER2;
Query OK, 1 row affected (0.01 sec)

mysql> create table VENDEDOR 
    -> (id_cliente char (10) not null primary key,
    -> nombre char (10) not null,
    -> cupo_credito float(10) not null);
ERROR 1046 (3D000): No database selected
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| automoviles        |
| biblioteca         |
| cdcol              |
| factura            |
| libreria           |
| mysql              |
| performance_schema |
| phpmyadmin         |
| taller2            |
| test               |
| webauth            |
+--------------------+
12 rows in set (0.02 sec)

mysql> use TALLER2;
Database changed
mysql> create table VENDEDOR 
    -> (id_vendedor char (10) not null primary key,
    -> nombre char (40) not null,
    -> zona char (15) not null);
Query OK, 0 rows affected (0.31 sec)

mysql> create table CLIENTE 
    -> (id_cliente char (10) not null primary key,
    -> nombre char (40) not null,
    -> cupo_credito float (10) not null);
Query OK, 0 rows affected (0.34 sec)

mysql> show tables;
+-------------------+
| Tables_in_taller2 |
+-------------------+
| cliente           |
| vendedor          |
+-------------------+
2 rows in set (0.00 sec)

mysql> alter table VENDEDOR add porcentaje_de_comision float (3) not null;
Query OK, 0 rows affected (0.73 sec)
Records: 0  Duplicates: 0  Warnings: 0

mysql> describe VENDEDOR;
+------------------------+----------+------+-----+---------+-------+
| Field                  | Type     | Null | Key | Default | Extra |
+------------------------+----------+------+-----+---------+-------+
| id_vendedor            | char(10) | NO   | PRI | NULL    |       |
| nombre                 | char(40) | NO   |     | NULL    |       |
| zona                   | char(15) | NO   |     | NULL    |       |
| porcentaje_de_comision | float    | NO   |     | NULL    |       |
+------------------------+----------+------+-----+---------+-------+
4 rows in set (0.14 sec)

mysql> insert into VENDEDOR (id_vendedor,nombre,zona,porcentaje_de_comision) values ('001','luis Meza','norte',0.5);
Query OK, 1 row affected (0.05 sec)

mysql> inser into VENDEDOR (id_vendedor,nombre,zona,porcentaje_de_comision) values ('002','Camilo Lleras','centro',0.6);
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'inser into VENDEDOR (id_vendedor,nombre,zona,porcentaje_de_comision) values ('00' at line 1
mysql> insert into VENDEDOR (id_vendedor,nombre,zona,porcentaje_de_comision) values ('002','Camilo Lleras','centro',0.6);
Query OK, 1 row affected (0.05 sec)