CodeIgniter's Model method ________ is used for pagination of query results.
- limit()
- paginate()
- slice()
- split()
The paginate() method in CodeIgniter Models is used for pagination of query results. It helps in breaking down large result sets into smaller, more manageable pages.
To ensure that sensitive data is not logged, CodeIgniter recommends disabling ________ in production environments.
- Caching
- Database Queries
- Error Logging
- Profiler
CodeIgniter advises disabling the profiler in production to prevent sensitive information, such as query details, from being logged. The profiler is a debugging tool and should not be enabled in a live environment for security reasons.
When integrating a third-party library that requires database interactions, which CodeIgniter feature is most crucial for seamless integration?
- Database Configuration
- Database Library
- Database Seeder
- Query Builder Class
When integrating a third-party library that requires database interactions, the most crucial CodeIgniter feature is the Database Library. This library provides a set of functions for interacting with the database, making it essential for seamless integration with third-party libraries that involve database operations.
What is the difference between an error and an exception in programming?
- Errors are compile-time issues, while exceptions are runtime issues
- Errors are handled by the programmer, while exceptions are handled by the system
- Errors are intentional, while exceptions are unintentional
- Errors are non-recoverable, while exceptions can be handled and recovered from
The key distinction between errors and exceptions lies in their recoverability. Errors are typically non-recoverable issues that result from severe problems, such as out-of-memory errors. On the other hand, exceptions are designed to be caught and handled, allowing for graceful recovery from unexpected situations during runtime.
What is the primary purpose of OAuth in web applications?
- Creating static web pages
- Defining database schemas
- Enabling secure third-party access to resources
- Storing user passwords securely
OAuth in web applications is primarily used for enabling secure third-party access to resources. It allows users to grant limited access to their resources without sharing their credentials.
In a RESTful API built with CodeIgniter, how is pagination typically implemented for resource listings?
- Embedding pagination information in the request headers.
- Including pagination details in the request body.
- Using query parameters such as "page" and "limit" in the API endpoint URL.
- Utilizing cookies to store and retrieve pagination details.
In a RESTful API built with CodeIgniter, pagination for resource listings is typically implemented by using query parameters such as "page" and "limit" in the API endpoint URL. This allows clients to request specific pages and control the number of items per page.
What is the default behavior of transactions in CodeIgniter regarding auto-commit?
- Auto-commit is disabled by default
- Auto-commit is enabled by default
- CodeIgniter does not support transactions
- Depends on the database driver
In CodeIgniter, the default behavior of transactions is that auto-commit is enabled by default. This means that each SQL statement is treated as a single transaction and is automatically committed.
How does CodeIgniter's 'Form Validation' class contribute to application security?
- Encrypts database connections
- Enhances input data integrity
- Implements secure file uploads
- Provides secure login functionality
CodeIgniter's 'Form Validation' class enhances input data integrity by validating and filtering user input, reducing the risk of security vulnerabilities such as SQL injection and XSS attacks. It ensures that only valid and expected data is processed, contributing to overall application security.
What is the impact of using the 'strict' mode in CodeIgniter transactions?
- 'Strict' mode ensures that transactions are executed only if the database engine supports transactions.
- 'Strict' mode has no impact on CodeIgniter transactions.
- 'Strict' mode prevents CodeIgniter from automatically rolling back a transaction if an error occurs during its execution.
- In 'strict' mode, CodeIgniter throws an exception if any database error occurs during a transaction.
When 'strict' mode is enabled, CodeIgniter will automatically roll back a transaction if any database error occurs during its execution. This helps maintain data integrity by preventing the application from continuing with potentially corrupt data. It ensures that transactions are handled more cautiously, and the system responds promptly to any issues that may compromise the transaction.
In a blog application, when a post is updated, the Active Record Class method sequence that is most appropriate is: ________.
- set()
- update()
- update_batch()
- where()
The correct sequence for updating a record in CodeIgniter using Active Record is set() to set the values, followed by where() to specify the condition, and then update() to perform the update. update_batch() is used for updating multiple records simultaneously.