Data Transformation is an essential aspect of any data management process that organizes and integrates data to make it actionable and valuable. The technology for data transformation is varied and includes the common tool, Structured Query Language (SQL).

SQL is a programming language that is used for managing and manipulating databases. Unlike many other programming languages that use logic to tell a computer what to do, SQL uses statements to instruct a database what to do. This makes SQL an effective tool for managing large amounts of data, effectively transforming it into an actionable format.

Creating SQL Commands

One of the essential tasks in SQL-based data transformation is the creation of SQL commands. SQL commands are categorized into different types such as Data Definition Language (DDL), Data Manipulation Language (DML), and Data Control Language (DCL).

DDL commands are used to define and manage databases and related objects. CREATE, ALTER, and DROP are some of the most commonly used commands in DDL.

DML commands, on the other hand, are used to manipulate the data within the databases. DML includes the SELECT, INSERT, UPDATE, and DELETE commands.

Lastly, DCL commands are used to control the access to the database. The commonly used commands in DCL include GRANT, REVOKE, COMMIT, and ROLLBACK.

Modifying SQL Commands

To carry out a considerable data transformation, modifications of SQL commands can happen frequently. In the process of creating and defining a command, a data transformer may need to alter it as per the requirement. For instance, an ALTER command in SQL can help modify the structure of an existing database.

Executing SQL Commands

After creating and potentially modifying SQL commands, it's time for execution. Execution is the process through which SQL commands are put into action to achieve the designed objectives. The result is a transformed and valuable set of data that is easy to understand and act upon.

Conclusion

Data transformation is a crucial process in the world of data management. SQL, being a flexible and easy-to-understand programming language, is a favorable technology for carrying out effective data transformation. From creating to modifying and executing SQL commands, the journey of data transformation with SQL is both exciting and rewarding.

Reading this detailed introduction to data transformation using SQL should hopefully inspire you to explore more about relational databases and the SQL language itself. It's not just about the mechanics of transforming data, but also about understanding the importance of data transformation in our continuously evolving digital world.