# Creating Information Structures
Moving forward in your training as an administrator of a CoB platform server, in this tutorial you will learn all the essential skills for building small CoB solutions, such as:
- Creating domains;
- Creating definitions
- Changing definitions
- Cloning definitions
- Deleting definitions and domains;
- Using the different types of fields available within the CoB platform (mandatory, duplicate, children, and conditional)
- Taking advantage of all the keywords you can use in a field (basic, advanced, and customized)