In NoSQL$$terminologies$$on$$database$$construction$,$which of the following is NOT part of it$?$

Question $4$ options:

Normal form: A method of normalizing, or minimizing duplication, in data in an RDBMS$.$

Collection: Assigning a record to a collection is usually done at creation or update time.$$

Schema: In RDBMS and to a certain extent column$$stores$.$ The structure of the data must be configured in the database before any data is loaded.$$

Collection: A set of records, typically documents, that are grouped together. This is based not on a property within the record set, but within its metadata.