Data processing: database and file management or data structures – Database design – Data structure types
Patent
1997-09-08
1999-11-30
Black, Thomas G.
Data processing: database and file management or data structures
Database design
Data structure types
707 4, G06F 900
Patent
active
059959584
ABSTRACT:
A computer system and method for storing and managing a database that has lambda-definable functions as its foundation. The database is a collection of nodes that are connected by a set of links, and further it is a directed acyclic graph constructed from the nodes and the links. There are two types of links. By ignoring one type of the links, the database can be viewed as a set of trees; and by ignoring another type of the links, the database can be viewed as another set of trees. The directed acyclic graph and the two sets of trees illustrate the dependent relationships among the data and provide means in manipulating the database. A node has a name for the purpose of identification; and a value that carries an unit of meanings of the database application. The value of a node is selected from a regular data type, user-defined data type, and lambda-definable functions. Managing lambda-definable functions allows a database to support infinite data with finite storage. It is proved that a database is an enumeration of the properties of a lambda-definable function; and a lambda-definable function is the abstraction of a database. This gives a database management system the full computing capability that a computer has. Thus a database application doesn't need application-dependent software development in host programming languages except for high-level functional specifications, which reduces the development cost of the database application, and improves the reliability and performance of the database application.
REFERENCES:
patent: 4558413 (1985-12-01), Schmidt et al.
patent: 5434972 (1995-07-01), Hamlin
patent: 5871537 (1998-07-01), Ramaswami et al.
Black Thomas G.
Mills, III John G.
Smit Gerald J.
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