I will design database, er diagrams erd, sql queries, mysql oracle

• Database Design
• Normalization (1NF,2NF,3NF)
• Schema Design
• Conceptual and Logical design
• PL/SQL
• Joins/Groups 
• Complex queries 
• Table Constraints 
• Data Import and export
• Data Dictionary
• UML Diagrams
• Entity Relationship Diagrams (ER Diagram or ERD), 
• Data Definition DDL SQL Queries
• Data Manipulation DML SQL Queries. 
• Stored Procedure, 
• User Function, 
• Trigger, 
• View. 

I use the following databases

• Microsoft SQL Server (MSSQL), 
• Oracle, 
• MySQL, 
• SQLite
• PostgreSQL  
• MS Access databases.