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Extendible hashing is an attractive direct-access technique which has been introduced recently. It is characterized by a combination of database-size flexibility and fast direct access. This paper derives performance measures for extendible hashing, and considers their implications on the physical database design. A complete characterization of the probability distribution of the directory size and depth is derived, and its implications on the design of the directory are studied. The expected input/output costs of various operations are derived, and the effects of varying physical design parameters on the expected average operating cost and on the expected volume are studied. [ABSTRACT FROM AUTHOR]

Examines the characteristics of so-called information age organizations or organizations that are structured to operate in dynamic, information-rich environments. Sample case of computer and electronics companies; Decentralization and incentives offered in information age organizations; Cross-correlations and principal components for success variables.

This paper develops a microeconomic framework for the determination of data-processing budgets over time, and, in particular, the allocation of these budgets between software and hardware. The model dynamically balances the value and cost of information services, given the prevailing cost trends. It regards software and hardware as inputs to the process of producing Information services, and identifies the complementarity and substitution between them as major determinants of the efficient budget allocation. The theory provides a basis for understanding the budgeting process and for predicting future trends, and is applied to actual budget data. [ABSTRACT FROM AUTHOR]

Proposes another regulatory framework for multimarket securities trading in the United States. Regulatory policy for multimarket trading; Effects of multimarket trading on securities values and liquidity; Application of the proposed regulatory framework to trading rules and market mechanisms; Problems in the implementation of the proposed regulation system for derivative securities.