منابع مشابه
Turning Relational DBMS into Nested Relational DBMS
We describe an interface to relational database management systems using SML and CML. This interface is used within the broad-scale bioinformatics data integration system called Kleisli. It extends the conventional at relational data model supported by the query language SQL to a complex object data model. As a result, by going through this interface, a conventional at relational data managemen...
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Although there are several eeorts underway to build multilevel secure relational database management systems , there is no clear consensus regarding what a multilevel secure relational data model exactly is. In part this lack of consensus on fundamental issues re-ects the subtleties involved in extending the classical (single-level) relational model to a multilevel environment. Our aim in this ...
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متن کاملNested Pictorial Structures
We propose a theoretical construct coined nested pictorial structure to represent an object by parts that are recursively nested. Three innovative ideas are proposed: First, the nested pictorial structure finds a part configuration that is allowed to be deformed in geometric arrangement, while being confined to be topologically nested. Second, we define nested features which lend themselves to ...
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This project deals with design and simulation of multilevel topology based on the concept of nested arrangement. It has the advantages of reduced number of diodes and consequently gives higher efficiency as compared to the equivalent neutral point clamped inverter (NPC) topology. This method presents an optimized pulse width modulation strategy that provides synthesizing voltage waveforms with ...
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ژورنال
عنوان ژورنال: Journal of Computer and System Sciences
سال: 1988
ISSN: 0022-0000
DOI: 10.1016/0022-0000(88)90021-9