Salesforce a CRM  has there own limitation on the usage of resources which are actually based upon separate editions and these editions have there own governor limits which are specified below in this blog.

You can find out this whole by click on Setup -> System Overview in Org.

Salesforce Developer Edition:

Description Maximum Usage Limit
Schema
CUSTOM OBJECTS 400
DATA STORAGE 5.0 MB
Business Logic
RULES 2,000
CODE USED 3,000,000 characters
Most Used Licenses
SALESFORCE PLATFORM 3
SALESFORCE 2
CHATTER FREE 5,000
API Usage
API REQUESTS, LAST 24 HOURS 15,000
User Interface
CUSTOM APPS 10
ACTIVE SALESFORCE SITES 1
ACTIVE FLOW 500
CUSTOM TABS 100

Salesforce Enterprise Edition:

Description Maximum Usage Limit
Schema
CUSTOM OBJECTS 200
DATA STORAGE 200MB
Business Logic
RULES 2000
CODE USED 3,000,000 characters
Most Used Licenses
SALESFORCE PLATFORM 9
SALESFORCE 181
CUSTOMER COMMUNITY PLUS 1
API Usage
API REQUESTS, LAST 24 HOURS 5,000,000
User Interface
CUSTOM APPS 260
ACTIVE SALESFORCE SITES 25
ACTIVE FLOW 500
CUSTOM TABS 1225

Salesforce Professional Edition:

Description Maximum Usage Limit
Schema
CUSTOM OBJECTS 50
DATA STORAGE 1GB
Business Logic
RULES 2000
CODE USED 3,000,000 characters
Most Used Licenses
CHATTER EXTERNAL 500
SALESFORCE 5
CHATTER FREE 5000
API Usage
API REQUESTS, LAST 24 HOURS 16000
User Interface
CUSTOM APPS 255
ACTIVE SALESFORCE SITES
ACTIVE FLOW 500
CUSTOM TABS 1210

Salesforce Unlimited Edition:

Description Maximum Usage Limit
Schema
CUSTOM OBJECTS 2000
DATA STORAGE 1GB
Business Logic
RULES 2000
API Usage
API REQUESTS, LAST 24 HOURS Unlimited
User Interface
CUSTOM APPS Unlimited
ACTIVE FLOW 500
CUSTOM TABS Unlimited

Thanks For Reading

Happy Salesforce!!