Ahmed Khalefa Email and Phone Number

Around 5 years of experience in Application Development using Oracle SQL, PL/SQL, and Developer Oracle Application Express (APEX).Proficiency in analysis, design, development, testing, implementation and maintenance of applications in Oracle Application Express (APEX) and client/server configurations.Excellent conceptual knowledge of Oracle 10g/11g/12c/18c/19c/21c/23c, PL/SQL and SQL.Experience in Database design using Normalization and E/R Diagrams.Rich experience in writing SQL queries, Views, Materialized views, PL/SQL procedures, functions, packages, triggers, cursors, collections, Ref cursor, cursor variables, System reference cursor, Dynamic SQL.Experience in developing External Tables, Joins, Indexes and sequences.Experience in query optimization, performance and tuning (PL/SQL) using SQL Trace, Explain Plan, Indexing, Hints, Bulk Binds, Bulk Collect, Creation of global temporary tables and table partitioning.Good knowledge in front end development using oracle Apex.Experience in creating master detail forms and adding alerts.Experience in deploying forms and reports on the web.Excellent in using Restfull services and APIs and connecting different systems using APIs. Excellent in full control of users' permissions in system.Experience in developing forms based on views, tables and procedures in tabular and form layouts.Experience in developing both web layout and paper lay out reports in various styles based on the user requirements.Strong interpersonal skills, ability to interact with people at all levels. Good communication and presentation skills.