What is active record in ROR?
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What is active record in ROR?
Active Record is the M in MVC – the model – which is the layer of the system responsible for representing business data and logic. Active Record facilitates the creation and use of business objects whose data requires persistent storage to a database.
What does T references mean?
t. references tells the database to make a column in the table. foreign_key: true tells the database that the column contains foreign_key from another table. belongs_to tells the Model that it belongs to another Model.
What are Active Records?
Active records are documents still referred to frequently during the course of business. Active records are referenced at least once a month, and are usually maintained in a readily-accessible spot in the office space or office systems. INACTIVE RECORDS ARE INFREQUENTLY USED.
What are semi Active Records?
Semi-active Records Semi-active records are records that are not required constantly for current use and need not be maintained in the expensive office space, storage areas, or equipment of the user.
What is reference example?
The definition of a reference is someone who will give a recommendation for a position on behalf of another. An example of reference is a professor who will write a letter recommending a student for an internship. Significance for a specified matter; relation or relationship.
Is Data Mapper an ORM?
The two most popular implementations of ORM are Active Record and Data Mapper.
What are the examples of records?
Examples include documents, books, paper, electronic records, photographs, videos, sound recordings, databases, and other data compilations that are used for multiple purposes, or other material, regardless of physical form or characteristics.
What is a dormant record?
Dormant Record means a Record that is: (a) usually more than three years old; and (b) to which access is neither frequent nor urgent enough to warrant maintenance in office space.
What are scopes in Rails?
Scopes are custom queries that you define inside your Rails models with the scope method. Every scope takes two arguments: A name, which you use to call this scope in your code. A lambda, which implements the query.
What is dependent destroy in Rails?
The dependent: option which is built into Rails allows us to specify what happens to the associated records when their owner is destroyed. Until now, the dependent: option accepted :destroy , :delete_all amongst other values.
What is polymorphic association in Rails?
Polymorphic relationship in Rails refers to a type of Active Record association. This concept is used to attach a model to another model that can be of a different type by only having to define one association.
