Anatomy of an educational network database system

1984 ◽  
Vol 14 (8) ◽  
pp. 739-754 ◽  
Author(s):  
James L. Johnson
Keyword(s):  
Database System ◽  
Network Database

Design and Realization of Alfresco Database of the Micro-Information System

2014 ◽  
Vol 989-994 ◽  
pp. 4643-4649
Author(s):  
Xiao Yang Yan ◽  
Zhi Peng Lin ◽  
Xing Ming Zhang ◽  
Wen Chao Yang
Keyword(s):  
Information System ◽  
Data Security ◽  
Database System ◽  
Open Platform ◽  
Management Efficiency ◽  
Network Database ◽  
Data Query ◽  
Development Tool ◽  
Design Ideas ◽  
Apache Tomcat

The Alfresco development tool, which includes Apache Tomcat, MySQL and WebService, is an open platform for building a functional database system in a Java website. In order to improve the enterprises’ management efficiency in specialized industrial townships, a micro-information system based on Alfresco development tool has been proposed. In the construction of the micro-information system, Alfresco database exhibits great superiority in network database architecture, data query with Lucene search engine, data management and data security. In this paper, the general design ideas, functions, key technologies and realization methods of the Alfresco database are introduced.

ARCHITECTURE OF A UNIVERSAL DATABASE: A FRAME MODEL APPROACH

1999 ◽  
Vol 08 (01) ◽  
pp. 47-82 ◽  
Author(s):  
JOSEPH FONG ◽  
SHI-MING HUANG
Keyword(s):  
Database Systems ◽  
Database System ◽  
Data Models ◽  
User Friendliness ◽  
Frame Model ◽  
Network Database ◽  
Schema Translation ◽  
Database Program ◽  
Database Language ◽  
Model Approach

RDB has been dominant in the industry for the last decade. OODB is recongnized as a post-relational technology that can improve productivity, Hierarchical Database and Network Database were popular in the 1970s, and have been developed into legacy database systems. The DBMS of various data models have proliferated into many companies, and become their important assets. There is a need to integrate these database system into a data warehouse in the company. We investigate a solution to the problem by offering an architecture of a universal database for the connectivity of various DBMSs using different data models. A frame model is chosen to represent the conceptual and logical schema of the universal database, which structures an application domain into classes organized via generalization, aggregaton and user-defined relationships, and its data in relational tables. The schemas of the existing database systems are translated into frame model conceptual shcemas which are integrated into a global frame model in a knowledge representation that includes classes for object structure descriptions and constraints for supporting user-defined relationships. The universal database is implemented by a relational DBMS as a kernel. In addition to relational tables, the universal database consists of program area to emulate database navigation in nonrelatoinal DBMS, method classes to implement program calls to emulate methods of OODBMS, and contraint classes to preserve semantic and resolve naming conflicts in schema translation and integration. To ensure each database program access the universal database, a database gateway for each source DBMS is developed to translate their DML into SQL, which is chosen to be its kernel database language, for its user-friendliness, standardization and popularity in the industry.

Network Database System for Metal Cutting Burr

2007 ◽  
Vol 24-25 ◽  
pp. 7-12
Author(s):  
Yun Ming Zhu ◽  
Gui Cheng Wang ◽  
Zhi Wang ◽  
Shu Tian Fan
Keyword(s):  
Neural Networks ◽  
Data Transmission ◽  
Metal Cutting ◽  
Database System ◽  
Cutting Conditions ◽  
Machining Accuracy ◽  
Manufacture Technology ◽  
Network Database ◽  
The Common ◽  
Data Inquiry

The formation and existence of burrs is one of the common phenomena in machining. It affects directly machining accuracy and parts quality. Network database system for metal cutting burr is developed using ASP.NET platform. The management of metal cutting burr data, inquiry and prediction of cutting burrs types and sizes, optimization of cutting conditions for controlling burr forming which based on the reasoning method of BP neural networks are realized. The development and realization of network database of metal cutting burr provide a convenient way for data transmission between multi-workshop and across regions, promote the development of burr controlling technology and modern manufacture technology.

Construction and design of network database system of wild flowers of Beijing

2015 ◽  
pp. 11-12
Author(s):  
Kai Huang ◽  
Qun Zhao ◽  
Zhihuan Chen ◽  
Zhaojie Liu
Keyword(s):  
Database System ◽  
Network Database

High Availability Technologies for PACS

2010 ◽  
pp. 41-52
Author(s):  
Carrison K.S. Tong ◽  
Eric T.T. Wong
Keyword(s):  
Single Point ◽  
Hard Disk ◽  
Database System ◽  
High Availability ◽  
Hardware Failure ◽  
Physical Network ◽  
Network Database ◽  
Actual Loss ◽  
Disk Failure

PACS disasters can, and do, appear in a variety of forms including storage hard disk failure, file corruption, network breakdown, and server malfunction. The PACS disasters are commonly classified into hardware, environmental and physical, network, database system, and server failures. A single point of hardware failure in PACS is at the PACS controller, or the main archive server. When it occurs, it renders the entire PACS inoperable and crippled, until the problem is diagnosed and resolved. Recently, various techniques were developed for the prevention of PACS disasters caused by the actual loss and inaccessibility of data. All those techniques are commonly called “High Availability (HA) Technologies” (Marcus, Stern, 2003). The objective of this chapter is to discuss various HA technologies for the prevention of PACS disasters.

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