What is a database schema?
A database query
A blueprint that defines the structure and organization of a database
A database table
A database index
Correct Answer :
B. A blueprint that defines the structure and organization of a database
Related Questions
What is the purpose of an array in programming?
To store a single value
To store a collection of values of the same data type
To perform mathematical calculations
To create graphics
What is a database schema?
A database query
A blueprint that defines the structure and organization of a database
A database table
A database index
Which data structure uses a Last-In-First-Out (LIFO) order?
Queue
Stack
Linked List
Tree
What is a loop in programming?
A bug in the code
A function that repeats a specific task
A variable that stores multiple values
A conditional statement
In the binary number system, what is the value of the leftmost digit?
1
0
2
It depends on the context
Which sorting algorithm has the worst-case time complexity of O(n^2)?
QuickSort
MergeSort
BubbleSort
InsertionSort
What is the purpose of the while loop in programming?
To execute a block of code a specific number of times
To define a function
To make decisions and execute code conditionally
To repeat a block of code while a condition is true
Which of the following is a valid way to define a variable in Python?
variableName = 42
variableName := 42
42 = variableName
variableName -> 42
What is the purpose of an index in a database?
To sort data alphabetically
To store backup copies of data
To optimize data retrieval by providing fast access to specific records
To encrypt data
In binary, what is the result of the bitwise OR operation (|) between 1010 and 1100?
1000
1110
0110
1010
What is the purpose of the break statement in programming?
To create a loop
To exit a loop prematurely
To define a function
To print output to the console
What does HTTP stand for in the context of web communication?
HyperText Transfer Protocol
HyperTransfer Text Protocol
HyperTransfer Transfer Protocol
HyperText Text Protocol
What is the purpose of the continue statement in programming?
To exit a loop prematurely
To define a function
To print output to the console
To create a loop
What does the term HTTP request refer to in web development?
A request for information sent from a web server to a web client
A request for information sent from a web client to a web server
A request to download a web page
A request to play a video on a web page
Which of the following is a valid way to comment out code in Python?
/* This is a comment */
// This is a comment
# This is a comment
Which data type is used to store whole numbers in Python?
float
int
str
bool
In object-oriented programming, what is a class?
A type of data structure
A step-by-step procedure
A blueprint for creating objects
A loop
Which of the following is not a type of computer memory?
RAM (Random Access Memory)
ROM (Read-Only Memory)
CPU (Central Processing Unit)
Cache
What is a primary key in a database table?
A key used to unlock the database
A key used for encryption
A unique identifier for each record in the table
A key used for sorting records
What is the purpose of the finally block in a try-except-finally construct in Python?
To define a function
To execute code regardless of whether an exception occurred
To create graphics
To repeat a block of code
Which programming language is often used for data analysis and machine learning?
Java
Ruby
Python
C#
What is a network firewall used for?
To protect against physical intrusions
To block unwanted network traffic and protect a network from unauthorized access
To boost network speed
To filter spam emails
What is the binary representation of the decimal number 42?
00101010
10101010
11010010
01010101
What is the main purpose of a function in programming?
To store data
To execute code in a random order
To perform a specific task or computation
To create graphics
Which programming paradigm is based on the concept of objects?
Functional programming
Procedural programming
Object-oriented programming
Declarative programming
Which data structure is used to store a collection of elements with no duplicates?
Array
Set
List
Dictionary
What does CPU stand for?
Central Processing Unit
Computer Programming Unit
Central Program Unit
Computer Processing Unit
What is the purpose of the switch statement in programming?
To execute code based on multiple conditions
To define a function
To create graphics
To exit a loop
What is the purpose of a database management system (DBMS)?
To display web pages
To protect against viruses
To store, retrieve, and manage data in a database
To create graphics
What is the purpose of a subroutine in programming?
To define a data type
To create graphics
To store data
To encapsulate a sequence of code that can be called multiple times