Oracle-Certified Senior Developer | SQL, PL/SQL & Database Design

Mohamed D.

I am an Oracle-certified Senior Oracle PL/SQL Developer with more than 15 years of professional experience developing and supporting Oracle database applications in enterprise environments. My work has included Oracle SQL, PL/SQL packages, procedures, functions, triggers, views, cursors, batch processing, backend APIs, query optimization, troubleshooting, and database design across government, banking and electronic-payment, ERP, and other business systems. I hold the Oracle Database PL/SQL Developer Certified Professional and Oracle PL/SQL Developer Certified Associate credentials. I also hold a Bachelor of Science from Alexandria University with a specialization in Biology.

Teaching and technical explanation have been an important part of my professional work. I have trained bank operators, team members, and application users through one-on-one instruction, classroom and group sessions, demonstrations, and documentation walkthroughs. I first identify where a student is getting stuck, explain the underlying concept clearly, and then use practical examples until the student can apply it independently.

I tutor SQL, Oracle PL/SQL, and relational database design, from SQL fundamentals, joins, subqueries, DML, and transaction control to PL/SQL procedures, functions, packages, cursors, exceptions, triggers, collections, and debugging. I also teach conceptual and logical data modeling, ER diagrams, normalization, keys, relationships, constraints, associative tables, and physical design. My goal is not simply to provide an answer, but to help students understand why a solution works, how an Oracle developer approaches the problem, and how to solve similar problems independently.