![]() Views are basically tables that exist only in SQL’s memory. INSERT INTO ‘customers’ (‘id’, ‘firstName’, ‘lastName’, ‘state’, ‘emailAddress’) VALUES (1, ‘John’, ‘Doe’, ‘Texas’, can also delete tables by using the DROP TABLE query like so: DROP TABLE ‘customers’ Once you’ve created the table, you can insert data into it using the INSERT INTO query, like Likewise, lastName, state, and emailAddress are three more attributes with the same properties as the firstName attribute. This attribute is set as Not Null, which implies that this field also cannot be left empty.ģ. This attribute is also a Primary Key, which means that one cannot leave this detail empty while filling the table and also that this attribute will be used while referencing this table from some other table.Ģ.firstName – with data type as ‘varchar’ with a maximum length of 40 characters.
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