Symfony is a powerful PHP framework renowned for its versatility and robustness. Established in 2005, it follows the MVC architecture, offering reusable components and tools for web development. With a strong community, Symfony excels in creating everything from small apps to complex enterprise systems, making it a top choice for PHP developers.
71. In Symfony, what is an entity in the context of Doctrine ORM?
Answer:A PHP class that represents a database table
72. What is the purpose of annotations in Doctrine ORM entity classes?
Answer:To configure mapping information between PHP entities and database tables
73. Which Doctrine annotation is commonly used to define the primary key of an entity?
Answer:### @Id
74. In Symfony Doctrine ORM, what is a repository class used for?
Answer:To encapsulate database queries and provide a convenient way to fetch entities
75. What is the purpose of the Doctrine EntityManager in Symfony?
Answer:To manage database connections, perform CRUD operations on entities, and execute queries
76. In Symfony Doctrine ORM, what is the purpose of the @ManyToOne annotation?
Answer:To establish a many-to-one relationship between entities
77. What is a DQL (Doctrine Query Language) in Symfony Doctrine ORM?
Answer:A domain-specific language for querying objects stored in the database
78. What is the purpose of Doctrine migrations in Symfony applications?
Answer:To manage and version-control database schema changes over time
79. Which command is used to generate and execute database migrations in Symfony Doctrine ORM?
