To create a table, use the CREATE TABLE statement.
CREATE TABLE
hotel.person
(pno FIXED(6),
name CHAR(20),
city CHAR(20))
You specify the name of the table (person) after the keywords CREATE TABLE. Create the person table in the hotel schema.
In the list of column definitions, you have to specify the name and data type of each column. The list of column definitions is in parentheses.
· The person table contains columns with the following names: pno, name, city
· The columns have the following data types: pno FIXED(6) and name and city, each CHAR(20)
See also:
CREATE TABLE Statement (create_table_statement)
The person table is a very simple table. The only input restriction for values in the columns in the person table is that the data types must be specified. In reality, additional entries, restrictions, and objects, such as constraints, primary keys, domain definitions, database procedures and database triggers are usually required to ensure data integrity.
See also:
You can use the ALTER TABLE statement to change the table definition while the database is in operation.
ALTER TABLE hotel.person
ADD (code FIXED(5), fon
FIXED(8))
Columns for the telephone dialing code and number are added to the person table.
See also:
ADD Definition (add_definition)
ALTER TABLE hotel.person
DROP (code)
The column for the telephone dialing code is dropped again from the customer table.
See also:
DROP Definition (drop_definition)
ALTER TABLE hotel.person
COLUMN fon FIXED(10)
The column definition is changed in the customer table. The column is redefined only if it corresponds to the values already stored.
See also:
COLUMN Change Definition (column_change_definition)
Additional changes can be made to existing tables.
See also:
ALTER TABLE Statement (alter_table_statement)
To rename a table, use the RENAME TABLE statement.
RENAME TABLE hotel.person TO member
Rename the person table to member
See also:
RENAME TABLE Statement (rename_table_statement)
To drop a table, use the DROP TABLE statement.
DROP TABLE hotel.member
You can use this SQL statement to drop the table definition, the table contents, and all dependent objects (such as view tables and indexes). The table can be dropped by the table owner only.
See also:
DROP TABLE Statement (drop_table_statement)