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Override the table Name() method if they are different.
The model() method is declared as such for every AR class (to be explained shortly).
Info: In this guide, we use lower case for all table names and column names.
This is because different DBMS handle case-sensitivity differently.
The following example shows the minimal code needed for the AR class representing the Tip: Because AR classes are often referenced in many places, we can import the whole directory containing the AR class, instead of including them one by one.
Tip: Because Active Record relies on the metadata about tables to determine the column information, it takes time to read the metadata and analyze it.Although Yii DAO can handle virtually any database-related task, chances are that we would spend 90% of our time in writing some SQL statements which perform the common CRUD (create, read, update and delete) operations.It is also difficult to maintain our code when they are mixed with SQL statements. Active Record (AR) is a popular Object-Relational Mapping (ORM) technique.Each AR class represents a database table (or view) whose attributes are represented as the AR class properties, and an AR instance represents a row in that table.
Common CRUD operations are implemented as AR methods.property will reflect the primary key value of the newly inserted post, even though we never change it explicitly.If a column is defined with some static default value (e.g.If the schemas of the databases are different, you may create different base AR classes with different implementation of get Db Connection().