Here's why:
* DDL's Purpose: DDL is specifically designed for creating, modifying, and deleting database objects. These objects make up the schema of your database.
* Schema Components: Schema components include things like:
* Tables: These define the structure for storing your data.
* Columns: These define the specific fields within a table, their data types, and constraints.
* Indexes: These are used to improve query performance.
* Views: These provide alternative ways to access and manipulate data.
* Constraints: These enforce data integrity and consistency.
Example:
Using DDL, a DBA might create a table named "Customers" with columns for "CustomerID," "Name," and "Address." The DBA would use DDL statements to define the data types of each column and any constraints, such as making "CustomerID" a primary key.
Let me know if you'd like more detail on any of these DDL aspects!