Configurable database admin

I need XML configurable database admin (CRUD) webapp for backend database administration. It should be similar to phpMyAdmin (and other tools), but this app will be controlled via XML configuration file specifying complete database management layout (phpMyAdmin gathers these informations automatically from database): - which tables will be managed - which CRUD operations will be allowed - optional relationship to other tables (parent->child view) - filed types and/or type restrictions App should be not database-specific and use existing libraries if possible.