CodeIgniter is a powerful and lightweight open-source PHP framework renowned for its simplicity and speed in web application development. With a focus on minimal configuration and a straightforward yet comprehensive toolkit, CodeIgniter empowers developers to build robust and scalable web applications efficiently. Its Model-View-Controller (MVC) architecture enhances code organization, making it easy to create maintainable and modular applications. CodeIgniter also offers a rich set of libraries and helpers, enabling rapid development and customization. Whether you're a novice or an experienced developer, CodeIgniter is an excellent choice for crafting dynamic and high-performance web solutions.
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Practice Test
51. In CodeIgniter, what does ORM stand for in the context of models?
A. Object-Relational Mapping
B. Object-Rendering Model
C. Object-Request Management
D. Object-Resource Management
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Answer: Object-Relational Mapping
52. How do you load a model in a CodeIgniter controller?
A. Using the $this->load->model() method
B. Using the require statement
C. Using the include function
D. By creating an instance of the model class
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Answer: Using the $this->load->model() method
53. What is the purpose of CodeIgniter's Active Record class when working with models?
A. To simplify database queries and interactions
B. To handle user authentication
C. To render HTML templates
D. To manage controller logic
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Answer: To simplify database queries and interactions
54. What does CodeIgniter's $this->db->get() method do when used with a model?
A. Retrieves records from a database table
B. Loads a view file
C. Executes a controller method
D. Validates user input
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Answer: Retrieves records from a database table
55. In CodeIgniter, can a model contain business logic and data validation rules?
A. Yes, models can contain business logic
B. No, models should only interact with the database
C. Yes, but only if explicitly allowed
D. No, business logic belongs in the controller
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Answer: Yes, models can contain business logic
56. How can you pass data from a controller to a model in CodeIgniter?
A. By calling model methods with parameters
B. By setting the $data property
C. By including the model file
D. By using global variables
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Answer: By calling model methods with parameters
57. In CodeIgniter, what is the primary purpose of the $this->db->insert() method when used with a model?
A. Inserts data into a database table
B. Loads a view file
C. Retrieves data from the database
D. Updates records in the database
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Answer: Inserts data into a database table
58. What is the role of the CI_Model class in CodeIgniter models?
A. It is the base class that models extend
B. It handles database connections
C. It defines the controller methods
D. It represents a database table
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Answer: It is the base class that models extend
59. In CodeIgniter, where is the primary database configuration file located?
A. application/config/database.php
B. system/config/database.php
C. application/database/config.php
D. system/database/config.php
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Answer: application/config/database.php
60. What is the purpose of the $active_group configuration in the CodeIgniter database configuration?
A. To specify the active database connection
B. To define table relationships
C. To set the database charset
D. To enable database caching
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Answer: To specify the active database connection
