Method for managing and accessing relational data in a relationa

Details Method for managing and accessing relational data in a relationa Method for managing and accessing relational data in a relationa

1997-12-24

2000-05-30

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707103, G06F 1730

Patent

active

06070165&

ABSTRACT:
For an object-based application being executed in a digital computing system a framework is provided for managing information retrieved from a structured database, such as a relational database. The processor is used to construct a single cohesive data structure, called a relational cache, that comprises all the row instances and that represents information retrieval from the structured database in a form suitable for use by one or more applications.
An application may have several of these relational caches active at any one time, some of which may represent separate user editing sessions, where each session may be saved or discarded independently. The framework ensures that only one copy of a row instance is in a given cache at any given time, even if several different queries return the same information from the database. Row instances within the relational cache may be modified by the application, where the row instances are marked as modified but not saved to the database at that time. The framework ensures all modified row instances within the cache are saved at one time, which are presented to the database as a single transaction, with individual rows ordered so as not to violate database referential integrity rules. Other properties of the framework are disclosed.

REFERENCES:
patent: 4947320 (1990-08-01), Crus et al.
patent: 5615362 (1997-03-01), Jensen et al.

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