Database Connectivity and Integration: Master Database Connectivity for Web Development

Question 1

In the context of web development, which of the following is a key advantage of using a NoSQL database over a relational database for high-traffic websites?

Accepted Answer

Supports horizontal scalability for large data volumes

Answer

Ensures strong data consistency

Answer

Provides comprehensive support for complex data types

Answer

Offers automated data backup and recovery

Question 2

Which of the following is NOT a key advantage of using an API for database integration in web applications?

Accepted Answer

Increased complexity and maintenance overhead

Answer

Reduced development time and effort

Answer

Enhanced security and data integrity

Answer

Increased flexibility and scalability

Question 3

What is the primary purpose of utilizing a database framework in web development?

Accepted Answer

To define data models and perform CRUD operations efficiently

Answer

To cache database queries and improve performance

Answer

To secure database connections and prevent unauthorized access

Answer

To handle database transactions and ensure data integrity

Question 4

Which of the following is considered a best practice for preventing SQL injection attacks?

Accepted Answer

Implement both A and B

Answer

Utilize parameterized queries to prevent malicious input from being injected into database queries.

Answer

Sanitize user input thoroughly before using it in database queries.

Answer

Encrypt all data stored within the database.

Question 5

Which of the following is NOT a key aspect of database connection pooling?

Accepted Answer

Guarantees that all database connections are always available.

Answer

Reduces the overhead associated with establishing new database connections.

Answer

Improves the performance of database operations.

Answer

Provides a centralized point of access to the database.

Question 6

What is the primary role of an API in database connectivity?

Accepted Answer

Provides an interface to access database functionality and data

Answer

Stores and manages data in a database

Answer

Transmits data between a web application and a database

Answer

Handles user authentication and authorization

Question 7

What is the primary purpose of employing a database framework in web development?

Accepted Answer

To simplify database connectivity and minimize coding effort

Answer

To enhance database security and prevent data breaches

Answer

To improve the performance of database queries

Answer

To provide a visual user interface for database management

Question 8

What is the main purpose of using an ORM (Object-Relational Mapping) tool in web development?

Accepted Answer

To map objects to database records and vice versa

Answer

To optimize database queries and improve performance

Answer

To provide a secure and encrypted connection to the database

Answer

To automate database schema generation and migrations

Question 9

Which of the following is **not** a common data type used in databases?

Accepted Answer

Array

Answer

Integer

Answer

String

Answer

Boolean

Question 10

What is the distinction between a primary key and a foreign key in a database table?

Accepted Answer

A primary key uniquely identifies each row in a table, while a foreign key references another table

Answer

A foreign key uniquely identifies each row in a table, while a primary key references another table

Answer

Both primary keys and foreign keys enforce data integrity and prevent data loss

Answer

There is no distinction between a primary key and a foreign key

Question 11

Which of the following is a recommended practice for securing database connectivity in web applications?

Accepted Answer

Utilizing parameterized queries to prevent SQL injection attacks

Answer

Storing database credentials in plain text configuration files

Answer

Allowing unauthenticated users to access the database

Answer

Ignoring database security vulnerabilities

Question 12

What is the fundamental difference between a relational database and a NoSQL database?

Accepted Answer

Relational databases store data in structured tables with defined relationships, while NoSQL databases store data in flexible formats

Answer

NoSQL databases store data in structured tables with defined relationships, while relational databases store data in flexible formats

Answer

Relational databases are more efficient than NoSQL databases

Answer

NoSQL databases are more secure than relational databases

Question 13

In web development, what is the primary purpose of APIs in relation to database connectivity?

Accepted Answer

APIs facilitate communication between web applications and databases, enabling data exchange.

Answer

APIs are not essential for database connectivity in web development.

Answer

APIs are solely compatible with SQL databases.

Answer

APIs inherently ensure a secure connection to databases.

Question 14

In web development, which vulnerability arises from poor input validation and weak database connectivity?

Accepted Answer

SQL Injection

Answer

Cross-Site Scripting (XSS)

Answer

Buffer Overflow

Question 15

Which of the following is the most widely used API for connecting to databases from web applications?

Accepted Answer

REST

Answer

JSON

Answer

gRPC

Answer

SOAP

Question 16

What is the primary purpose of a primary key in the context of a database?

Accepted Answer

To uniquely identify each record in a table

Answer

To group related records in a table

Answer

To store the most important data in a table

Answer

To establish relationships between different tables

Question 17

Which of the following is an example of a popular NoSQL database?

Accepted Answer

MongoDB

Answer

MySQL

Answer

Oracle

Answer

PostgreSQL

Question 18

What is the main advantage of utilizing a database framework in web development?

Accepted Answer

It helps simplify database operations and reduces the need for manual coding

Answer

It significantly improves the speed and efficiency of database queries

Answer

It offers a user-friendly graphical interface for database management

Answer

It can automatically create and update database schemas

Question 19

Which of the following is a widely used method for transferring data between a web application and a database?

Accepted Answer

Asynchronous JavaScript and XML (AJAX)

Answer

Simple Mail Transfer Protocol (SMTP)

Answer

Hypertext Transfer Protocol (HTTP)

Answer

File Transfer Protocol (FTP)

Question 20

What is the main benefit of using an Entity-Relationship Diagram (ERD) in database design?

Accepted Answer

It helps visualize and comprehend the relationships between different entities in a database

Answer

It can generate code for database table structures

Answer

It serves as documentation for the database structure

Answer

It facilitates the creation of a prototype for a database application

Question 21

Which of the following is a crucial advantage of using prepared statements in database programming?

Accepted Answer

All of the mentioned advantages

Answer

It helps prevent SQL injection vulnerabilities

Answer

It optimizes the performance of database queries

Answer

It simplifies the process of writing database queries

Question 22

What is the primary function of a transaction in database management?

Accepted Answer

It ensures that changes made to the database are indivisible and consistent

Answer

It groups multiple database operations into a single unit

Answer

It locks the database while changes are being executed

Answer

It creates a backup of the database before any modifications are made

Question 23

Which of the following is considered a best practice for designing a database schema?

Accepted Answer

All of the mentioned practices

Answer

Utilizing appropriate data types for each column

Answer

Normalizing the data to eliminate redundancy

Answer

Employing clear and meaningful column names