L.L. Miller's research while affiliated with Iowa State University and other places
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Publications 0
This chapter introduces theories and models used in organizational memory. As organizations continue to automate their business processes and collect explosive amounts of data, researchers in knowledge management need to confront new opportunities and new challenges. In this chapter, we provide a brief review of the literature in organizational mem...
This chapter is about conceptualizing the applicability of grid related technologies for supporting intelligence in decision-making. It aims to discuss how the open grid service architecture—data, access integration (OGSA-DAI) can facilitate the discovery of and controlled access to vast data-sets, to assist intelligence in decision making. Trust i...
The number of data sources that an organization has to deal with continues to be nontrivial. Integrating this data is a growing problem. A great deal of research has been done to solve the general problem. Work on topics like multi-databases, mediators and ontologies has been directed at solving the general data integration problem. While all of th...
Organizations are looking at ways to manage their information resources. Both the capture and the use of data created by the organization have come under scrutiny. Part of the concern comes from their desire to enhance the business process and part comes from the explosion of data available to any organization. In this context, the role of committe...
Advances in wireless networking technology and portable computing devices have led to the emergence of the mobile computing paradigm. As a result, the traditional notion of timely and reliable access to global information sources in a distributed system or multidatabase system is rapidly changing. Users have become much more demanding in that they...
Advances in communication and computation technologies and the
recent marriage between the two allows users to have access to
information sources via portable, mobile computing devices, and wireless
connection. Broadcasting has been suggested as a possible solution for
several limitations within this new environment. In order to limit the
amount of...
Organizations are looking at ways to manage their information resources. Both the capture and the use of data created by the organization have come under scrutiny. Part of the concern comes from their desire to enhance the business process and part comes from the explosion of data available to any organization. In this context, the role of committe...
Tools for accessing, transforming, organizing and assimilating
data and knowledge from multiple heterogeneous, distributed data and
knowledge sources in a form that is suitable for further analysis
constitute some of the key enabling technologies for translating recent
advances in automated data acquisition, digital storage, computers and
communica...
Multidatabases offer practical means of managing information sharing from multiple preexisting heterogeneous databases. Furthermore, advances in computation and communication technologies allow users to access computer networks, using portable computing devices via a wireless connection, while mobile. By superimposing the mobile computing environme...
More data, especially unstructured data, is available to users than ever. There is so much data available that it is difficult for users to make use of their data in its raw form. To handle the diversity of data types, we have designed and prototyped a multidatabase/warehouse system. The system has been especially designed to facilitate the interac...
Multidatabase integration and interoperation facilitates the development of advanced applications built on top of heterogeneous database management systems (DBMSs). In this paper, we describe an extensible view system, the Zeus View System (ZVS), that supports multidatabase integration and interoperation. Our approach is based on multiple levels of...
Increasing complexity and diversity of future information systems call for new approaches that support intelligent and integrated access to heterogeneous, autonomous, and distributed information systems. Future software developments also exert strong demands on facilities for supporting code reuse, tool integration, cooperative programming, program...
In today's workstation based environment, applications such as
design databases, multimedia databases, and knowledge bases do not fit
well into the relational data processing framework. The object-oriented
data model has been proposed to model and process such complex
databases. Due to the nature of the supported applications,
object-oriented datab...
As computer applications have become more sophisticated, they have become data intensive. Such applications suffer from inadequate use of parallelism for processing data stored on secondary storage devices. Devices such as data base machines are useful in some applications, but many applications are too small or specialized to use data base machine...
Maybe algebra and attribute maybe algebra operations have been
studied to handle incomplete information in a relational database
system. These operations give the user the opportunity to investigate
the set of complete, as well as incomplete, data values which can not be
obtained with traditional algebra operations. However, some of these
operation...
Society is experiencing an information explosion. The proliferation of data combined with higher performance requirements have forced the designers of database systems to look beyond software solutions. Since the early 1970s, hardware approaches, namely database machines, have been introduced to overcome the inefficiencies of software database syst...
The concept of organizational decision support and the criteria
for designing such support systems (ODSS) have recently received a great
deal of attention. While the organizational decision processes differ
considerably from individual and group decision making, the requirements
for securing data from the corporate database in an ODSS are not much...
Society is experiencing an information explosion. The proliferation of data combined with higher performance requirements have forced the designers of database systems to look beyond software solutions. How to make the most of the available data automatically without a high degree of sophistication and complexity remains an important question. Sinc...
The properties required for an arbitrary subhypergraph to define an embedded join dependency are investigated. The nature of the functional dependencies required to insure the validity of the embedded join dependency is examined. An algorithm for testing an arbitrary subhypergraph for the losslessness property is given for functional dependencies e...
The concept of equivalence of heterogeneous relational database schemes is discussed. The use of a topological space defined over the attribute set is shown as a useful intermediate step in the process of establishing the equivalence of two heterogeneous database schemes. A means of selecting an optimal topology is given. The algorithms necessary t...
Missing or incomplete data continues to be a common problem in the data processing environment. Hardware solutions to the database problem, namely the database machines, must be able to provide an adequate solution to handling missing data in order to compete with current software solutions. We examine the optimal level of interpreting missing data...
The architectural features of the ASLM database machine are
explored, and the retrieval aspect of incorporating a comprehensive null
value policy into the design of ASLM is examined. The join operation is
used as a performance measure in the evaluation of ASLM. The extension
of ASLM to a multiuser/multiprogram environment by dynamic
reconfigurabili...
A parallel file system design is presented. The implementation of B-tree indices on the system is described. It is shown that by the use of some special purpose hardware, the bound on the height of the B-tree index can be significantly reduced over what can be achieved by simply employing the divide and conquer approach to using the parallelism in...
The proliferation of data combined with higher performance requirements have forced designers of database systems to look beyond software solutions. Hardware approaches, namely database machines, have been introduced to overcome this problem. Most of the database machine designs have been based on the relational database model. The performance of t...
Citations
... However, DBMSs offer limited flexibility, scalability, and robustness. Some suggestions propose the use of agents to solve this problem [29,24]. ...
... For example, the object structure of an email is shown in Figure 3.2. The primary components make use of traditional wrappers and object views [22] and are used to support communication within the model. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/11431281201894959-1698645702699_Q64/Huang-Yen-Cheng.jpg)
... true except in two trivial cases [16]. In the absence of functional dependencies, testing if a subhypergraph de®nes an EJD basically reduces to testing for a hinge. ...
Reference: Design of data warehouses using metadata
... Other related work on incomplete databases and database integration includes the following. In [Hurson et al. 1987] the authors examine the relationship between incomplete information and the join operation. They present a join module for a database machine and a time analysis to evaluate its performance. ...
... However, existing mobile technologies have to face several constraints such as limited network bandwidth, frequent disconnections and insufficient battery power. To cope with these constraints, there has been many studies on data transmission techniques using wireless data broadcasting (Acharya et al., 1995; Datta et al., 1999; Hurson et al., 1998; Juran et al., 2000; Lee et al., 2000). Generally a mobile client sends requests to the server and receives the response. ...
... The Fact Database contains the relations that exist for each LIV, the attributes stored in each relation (note that Ontology the attributes have been renamed to satisfy the property defined in [14], attribute data types, and the functional dependencies that have included by the individual registering the LIV. This information is used to generate a subquery for the LIV relations based on the method defined in [29]. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/272467440697349-1441972708225_Q64/Sree-Nilakanta.jpg)
... Correspondingly, two relational databases are equivalent if their sets of all fixed points intersected with the sets of feasible instances coincide. This and other approaches to the database equivalence problem had been studied in numerous papers (see [6], [7], [8], [10], [18], [35], [37], etc.). ...
... A handful energy-saving techniques were designed for single-server database systems. For example, Chehadeh et al. investigated energy-efficient indexing strategies in an object-oriented database environment [15]. Poess and Nambiar proposed a way of making tradeoffs between existing power-saving techniques and their performance impact on database applications. ...
... The Internal Object Data Store is based on our earlier work on object-oriented data warehouses [13]. The Internal Object Data Store combines tools and the cached data to allow in depth analysis of artifacts. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/272166197395488-1441900886619_Q64/Vasant-Honavar.jpg)
... Object clustering as a means of improving performance has been studied extensively within the scope of conventional object-oriented databases [4,7,9,15,16]. Due to the natural differences between the serial air channel and the random-access disk, one has to look at different and efficient methodology to organize and cluster objects on the air channel. ...
