What is the first step to domain separate a table?

The initial step to domain-separate a table involves creating a domain field. This process serves to establish a specific context within which data entries are categorized, ensuring that the values within that field are relevant and appropriately constrained. By defining a domain field, you ensure that the table can enforce the rules of data entry based on the requirements of the domain, facilitating better data integrity and validation.

The other processes, such as adding a business rule or creating a new table, follow after establishing the domain. While adding a field for domain values is important, it is most effective when the domain has already been established through the creation of a domain field. Thus, creating a domain field is crucial for the foundational setup that guides subsequent actions in the database design process.