Method and apparatus for information state management

Details Method and apparatus for information state management Method and apparatus for information state management

1995-07-03

1998-11-24

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707100, 707101, 707103, G06F 1730

Patent

active

058422234

ABSTRACT:
Data elements which can be combined to define a state are defined by respective attributes of an attribute set. An attribute includes an identifier, a data type, an accessor, and procedures for storing and retrieving values of the data element. A context includes at most one value for each attribute of an attribute set. Different contexts can have different respective values for the same attribute. Since an attribute includes a data type and procedures for storing and retrieving values of the attribute, type checking error detection mechanisms of the computer instruction language in which the attributes are implemented remain in effect. In addition, attribute values are stored in an ordered structure, e.g., an ordered list, in each context and the location within the ordered structure at which an attribute value corresponding to a particular attribute is stored in the particular attribute. As a result, attribute values are accessed within contexts in a particularly efficient manner. Attribute sets are extensible at run time such that attributes can be added to an attribute list during execution of a computer process in which the attribute set is implemented.

REFERENCES:
patent: 5291593 (1994-03-01), Abraham et al.
patent: 5295263 (1994-03-01), Kojima et al.
patent: 5379423 (1995-01-01), Mutoh et al.
patent: 5526519 (1996-06-01), Maruyama et al.
patent: 5634124 (1997-05-01), Khoyi et al.

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