Abstract: A computer system stores a database model of an object based on a plurality of updates to the object. Each update indicates a bound status of the update, a transaction date of the update, an effective date of the update, and a value of an attribute in the update. The computer system forms a view model of the object based on the database model of the object by reconstructing values of the attributes of the object from the plurality of updates with immutable bound statuses.

Abstract: A computer system stores a database of multi-dimensional variables indicating field values of rate plan objects. The database stores rules related to each rate plan object. The computer system forms a primary catalog comprising all of the multi-dimensional variables from all rate plan objects from the database. The computer system receives a first user input indicating a first plurality of field entries. The computer system forms a secondary catalog that inherits all rate plan objects of the primary catalog. The computer system identifies, in the secondary catalog, first fields values that do not correspond to the first plurality of field entries based on the rules for the rate plan objects corresponding to the first plurality of field entries. The identified first fields values are removed from the secondary catalog. A second rate plan object is formed based on the secondary catalog.

Abstract: A computer system stores a database model of an object based on a plurality of updates to the object. Each update indicates a bound status of the update, a transaction date of the update, an effective date of the update, and a value of an attribute in the update. The computer system forms a view model of the object based on the database model of the object by reconstructing values of the attributes of the object from the plurality of updates with immutable bound statuses.

Abstract: A computer system stores a database of multi-dimensional variables indicating field values of rate plan objects. The database stores rules related to each rate plan object. The computer system forms a primary catalog comprising all of the multi-dimensional variables from all rate plan objects from the database. The computer system receives a first user input indicating a first plurality of field entries. The computer system forms a secondary catalog that inherits all rate plan objects of the primary catalog. The computer system identifies, in the secondary catalog, first fields values that do not correspond to the first plurality of field entries based on the rules for the rate plan objects corresponding to the first plurality of field entries. The identified first fields values are removed from the secondary catalog. A second rate plan object is formed based on the secondary catalog.