In any hierarchy of data organization, the smallest entity to be processed as a single unit is called A. data field B. data record C. data file D. database E. None of the above

data field
data record
data file
database E. None of the above

The correct answer is: A. data field

A data field is the smallest unit of data that can be stored and processed by a computer. It is a single piece of information, such as a name, address, or phone number. Data fields are typically stored in a database, which is a collection of data that is organized in a way that makes it easy to find and use.

A data record is a group of related data fields. For example, a customer record might include the customer’s name, address, phone number, and email address. Data records are typically stored in a file, which is a collection of data records.

A database is a collection of data that is organized in a way that makes it easy to find and use. Databases typically contain multiple tables, which are collections of related data records.

E. None of the above is not the correct answer because it does not specify a specific type of data entity.