What is the purpose of IDERA DB Optimizer and how does it operate? It allows users to optimize SQL queries for various platforms through a unified interface. It simplifies the process of optimizing SQL code across major DBMSs through a single interface. It provides automated suggestions for performance optimization to enhance SQL tuning. It helps users analyze SQL queries using visual SQL tuning diagrams. It identifies problematic SQL queries through database profiling and wait-time analysis. It also enables users to test alternative SQL queries in a simulated production environment.