Changing the Structure of a Table
Explore how to use the SQL ALTER TABLE statement to modify existing database tables efficiently. Understand its syntax and learn to change table structures without dropping tables, while considering impacts on data and relationships for smoother database management.
We'll cover the following...
Understanding table evolution
Any software system goes through changes during the development as well as the maintenance cycles. In many cases, the database structure would also need to be modified accordingly.
(Select all that apply.) Which of the following are possible changes you might make to the structure of a database table? Multi-select
Add a new column.
Delete an existing column.
Rename a column.
Change the datatype associated with a column.
Rename a table.
Yes, we need all of these and a few more too! ...