I am new to crm , so i don't know how to use data modelling. I need a tutorial with some example of app development. Can you suggest a good tutorial with sample app designing in salesforce.
3 Answers
Have you looked at Salesforce Trailhead? - https://trailhead.salesforce.com/
This specific link is a Data Modelling trailhead module from Salesforce - https://trailhead.salesforce.com/trails/force_com_admin_beginner/modules/data_modeling
Did you have a look the following ...
For schema related stuff there is a trailhead on schema builder and viewing data model https://trailhead.salesforce.com/en/modules/data_modeling/units/schema_builder
There is also a trailhead on CRM basics
https://trailhead.salesforce.com/en/trails/getting_started_crm_basics
For deep-dive information, a few other places I always go back to -
https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/data_model.htm
https://developer.salesforce.com/blogs/developer-relations/2014/11/enterprise-data-architecture.html
