As a part of my curriculum, I am studying principles of DBMS from the book by Silberschatz and Korth.
A part of it is about
Data Definition Language (DDL).
I understand, in normal terms, that DDL is any set of commands that modify the schema and not the actual data. That is the simple way of putting it. A certain paragraph in the book states, in addition to what I said, as below:
We specify the storage structure and access methods used by the database system by a set of statements in a special type of DDL called a data storage and definition language. These statements define the implementation details of the database schemas, which are usually hidden from the users.
Can someone please explain to me what the first two lines mean ?
AFAIK, storage structure here would refer to the tables, in RDBMS, and access methods would refer to the views because they define what the user gets to see ?
Still, a simple explanation on this is welcome :)