Abstract: A method for storage and retrieval of both time-oriented versions and view-oriented versions of engineering change information in which the engineering change information progresses through a set of status conditions and access to the data by different user groups is conditioned upon the status of the information. Version control software logic enables users to create versioned objects by logical key grouping of data elements. The version control logic acts upon the logical keys and special versioned attributes of these objects for the proper specification and selection of object instances during creation, update or retrieval processing. Insert and extract sequence numbers are automatically generated for both historical preservation of previous engineering change information and efficient retrieval of the currently effective designs.

Abstract: A method and system for the definition and tracking of multiple unique product configurations for configuration management in which customer contracted views of the product are defined by applying temporary changes to the base product configuration. A product serial number effectivity is assigned to each unique customer specified product configuration and to the base product configuration in order to maintain multiple time-oriented versions of the product, thus supporting simultaneously both customer-specified and design-specified engineering changes to the base product. A product configuration identifier provides non-redundant data storage for each unique product configuration and can refer to noncontiguous ranges of product serial numbers. The configuration entry identifier in a product configuration table is used to peg detail component requirements to serially numbered products in order to correlate the product configurations as built with the product configuration as designed.

Abstract: The invention creates a number of End Item Configuration lists, each End Item Configuration list including a listing of those custom components and variations of standard components which are utilized for a selected configuration of a complex product. A basic bill of materials is also created including a listing of those standard components utilized for all configurations of the complex product. Thereafter, a relationship is established between a particular End Item Configuration list and a customer contract for the manufacture of a selected configuration of a complex product. Based upon the established relationship, a selected one of the End Item Configuration lists is retrieved and combined with a basic bill of materials to create a complete bill of material utilizing both the End Item Configuration list and the basic bill of materials, which may then be utilized in the manufacture of a particular configuration of a complex product.

Abstract: An attribute-based automated classification and retrieval system for group technology applications using a codeless classification system in which hierarchical classification structures are stored in a classification attribute file and in which searches can be performed at any level in the classification structure. The relationship between entities and classification attributes are kept in an item classification parameters file along with the parameter values associated with each entity-attribute pair. Queries on the data stored in the classification attribute file and item classification parameters file are stored alternately in a plurality of query results files as successive queries are used to narrow the scope of a search.

Abstract: A method for processing bill of material data in which low-level codes are updated in a bottom-to-top direction, from component items to subassemblies to assemblies. Updating the low-level code on a bottom to top traversal of a hierarchical path eliminates the need to maintain copies of the original low-level codes for recovery purposes. Continuity checking is performed before the low-level codes are updated. Low-level coding is extended for use in project network processing by substituting for the low-level code, the activity early start time in the forward pass and late finish time in the backward pass, and substituting for the increment value used in low-level coding, the activity duration time.