Data Management MCQs
Data Management MCQs
Answer these Data Management MCQs and see how sharp is your knowledge of Data Management.
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1: A _____ key can be described as a minimal superkey, a superkey without any unnecessary attributes.
A. Secondary
B. Candidate
C. Primary
2: A _____ language feature allows users to type commands or requests in normal text phrases.
A. Normal
B. Natural
C. Standard
3: A _____ specifies the fields and identifies the primary key in a particular file.
A. Frame design
B. Table design
C. Viewport
D. Window
4: An immutable class cannot have ________.
A. Unlimited
B. Public data fields
C. A constructor
D. False, 0, null
5: As pages in a book have numbers, computer memory and storage locations have ____.
A. Algorithm
B. Random-Access
C. Addresses
D. Ascending
6: Assigning initial values to an array is often referred to as ____.
A. Populating
B. Comma (,)
C. Subscript
D. Nothing
7: Data can be organized and processed sequentially using an array, called a(n) ____ list.
A. Linked
B. Ordered
C. Sequential
D. Ascending
8: Data that is sorted in ascending order is ordered ________.
A. From lowest to highest value
B. From highest to lowest value
C. Always with a binary sort algorithm
D. Always with a linear sort algorithm
E. None of these
9: Each node of a singly linked list has two components: ____ and ____.
A. Info; head
B. Link; back
C. Back; head
D. Info; link
10: Every element in an array is assigned a unique number known as a ________.
A. Subscript
B. Integer
C. Character
D. Number
E. None of these
11: Every node (except of the last node) in a singly linked list contains ____.
A. The address of the next node
B. Back; next
C. First = NULL;, last = NULL;, count = 0;
D. Traversal of a linked list
12: In a(n) ____________________ data type, each data item is a collection of other data items.
A. Structure
B. False
C. None of these
13: In oop, you declare a class that extends another class. this is called ________.
A. Inheritance
B. Encapsulation
C. Raw type
D. An Object
14: In the diagram of a binary tree, an arrow is called a(n) ____.
A. Relation
B. Path
C. Directed line
D. Directed branch
15: In the dmaic process, the __________ step is to measure the existing process.
A. Define
B. Second
C. Scatter plot
D. Rectangle
16: Java uses ________ to reference the current object.
A. True
B. False
C. A class
D. This
17: In several languages, the visual development environment is known by the acronym ____.
A. IDE
B. XML
C. ODI
D. IPE.
18: A(n) _____ can support large volumes of data and support applications that run an entire company.
A. Database
B. Database management system
C. End-user database ...
D. All of this
19: _____________ helps companies tap into the massive volume of customer opinions expressed online.
A. Text mining
B. Data mining
C. Increased costs
D. Records
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Data Management MCQs
