📄️ Overview
Rell provides several built-in functions for database operations. Rell allows both the comma notation and the "and" notation for defining records. However, they are not completely equivalent.
📄️ Create statement
Must specify all attributes that don't have default values:
📄️ Update statement
You can use operators @, @?, @*, @+ to specify cardinality, like for the at-operator. A run-time error occurs if the number of updated records doesn't match the cardinality.
📄️ Delete statement
You can use operators @, @?, @*, @+ to specify cardinality, like