Hello,
Where i can get the basic database schemas of various open source cms(modx,etc) and shopping cart(zencart,etc).

Thank you.

i would first look on their web site for the downloadable code... go and download it, then have a look through it for the CREATE TABLE statements... that's your schema

Thank you for your response
yes sir that is it what you said,
i am a novice but actually i meant some year ago i found zencart database schema in a nice pdf format, so i thought those opensource script's database has some resoureces where it may available as pdf. but now i can't remember how i found it?

anyways i understand .

thank you.

You could always install the product and use something like MySQL Workbench to produce the data model for you (MySQL Workbench 5.2.27)