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Database and application design can greatly impact the performance of an environment. The database architect determines the most efficient way to design all database objects (schemas, tables, indexes, and columns) while minimizing I/O. The application developers ensure that query and data manipulation language (DML) statements are constructed to minimize the amount of data selected or updated. These measures simplify the maintenance of evolving applications and databases.
For more information on MySQL database design and query optimization, see the following MySQL articles: