unidad II base de datos

http://bases-datos-2013.blogspot.mx/2013/02/arquitectura-de-sgbd.html

https://docs.google.com/document/d/1xouCge3-dqe-d7JM58cZ_8z_If_Q_PWxtLcHfzoR_0g/mobilebasic?hl=en

Albeeto Resendez (Caracteristicas del DBMS)
https://albertorit.blogspot.mx/