Understanding Data Structures

What are data?

• Only numbers

• Processed information

• Simply values or sets of values

• Only text values

What is a data item?

• A group of data structures

• A record of information

• A single unit of values

• A formatted report

What are group items?

• Items that cannot be divided

• Data items divided into subitems

• Values stored in memory

• Sorted records

What are elementary items?

• Subitems of data items

• Divided group items

• Data items that are not divided into subitems

• Logical units

What is an entity set?

• A type of array

• A collection of entities with different attributes

• Entities with similar attributes

• A function in SQL

What is meant by 'information' in the context of data?

• Raw data without context

• Data with attributes or processed data

• Memory blocks

• Symbols or noise

What is a primary key?

• A list of attributes

• The first value in a database

• A field used to identify a record uniquely

• A sorted list

What are the values in a primary key field called?

• Records

• Subkeys

• Keys or key values

• Foreign values

What is a stack?

• A queue-based system

• A random-access list

• A LIFO (Last-In, First-Out) linear list

• A sorted binary tree

In a stack, insertions and deletions occur at which end?

• Front

• Rear

• Middle

• Top