Digital government security infrastructure design challenges
TLDR
An approach that provides a theoretical foundation for the use of object-oriented databases and object-relational databases in data warehouse, multidimensional database, and online analytical processing applications and introduces a set of minimal constraints and extensions to the Unified Modeling Language for representing multiddimensional modeling properties for these applications.Abstract:
The authors propose an approach that provides a theoretical foundation for the use of object-oriented databases and object-relational databases in data warehouse, multidimensional database, and online analytical processing applications. This approach introduces a set of minimal constraints and extensions to the Unified Modeling Language for representing multidimensional modeling properties for these applications. Multidimensional modeling offers two benefits. First, the model closely parallels how data analyzers think and, therefore, helps users understand data. Second, multidimensional modeling helps predict what final users want to do, thereby facilitating performance improvements. The authors are using their approach to create an automatic implementation of a multidimensional model. They plan to integrate commercial online-analytical-processing tool facilities within their GOLD model case tool as well, a task that involves data warehouse prototyping and sample data generation issues.read more
Citations
More filters
Journal ArticleDOI
Proposed NIST standard for role-based access control
TL;DR: Although RBAC continues to evolve as users, researchers, and vendors gain experience with its application, the features and components proposed in this standard represent a fundamental and stable set of mechanisms that may be enhanced by developers in further meeting the needs of their customers.
Journal ArticleDOI
E‐government adoption: architecture and barriers
Zakareya Ebrahim,Zahir Irani +1 more
TL;DR: The proposed architecture framework for e‐ government adoption will reduce confusion surrounding e‐government infrastructure in the public sector through understanding the implementation processes, identifying requirements of information and communications technology tools, and highlighting the importance of the organisational management resources and the impact of barriers.
Journal ArticleDOI
A generalized temporal role-based access control model
TL;DR: This work proposes a generalized temporal role-based access control (GTRBAC) model capable of expressing a wider range of temporal constraints and allows expressing periodic as well as duration constraints on roles, user-role assignments, and role-permission assignments.
A UML profile for multidimensional modeling in data warehouses
TL;DR: In this paper, an extension of the Unified Modeling Language (UML) using a UML profile is defined by a set of stereotypes, constraints and tagged values to elegantly represent main MD properties at the conceptual level.
Journal ArticleDOI
A UML profile for multidimensional modeling in data warehouses
TL;DR: This paper presents an extension of the Unified Modeling Language (UML) using a UML profile defined by a set of stereotypes, constraints and tagged values to elegantly represent main MD properties at the conceptual level and uses the Object Constraint Language (OCL) to specify the constraints attached to the defined stereotypes.
References
More filters
Book
The Unified Modeling Language User Guide
TL;DR: In The Unified Modeling Language User Guide, the original developers of the UML provide a tutorial to the core aspects of the language in a two-color format designed to facilitate learning.
Journal ArticleDOI
An overview of data warehousing and OLAP technology
Surajit Chaudhuri,Umeshwar Dayal +1 more
TL;DR: An overview of data warehousing and OLAP technologies, with an emphasis on their new requirements, is provided, based on a tutorial presented at the VLDB Conference, 1996.
Proceedings ArticleDOI
The NIST model for role-based access control: towards a unified standard
TL;DR: The NIST model focuses on those aspects of RBAC for which consensus is available and is organized into four levels of increasing functional capabilities called flat RBAC, hierarchicalRBAC, constrained RBAC and symmetric RBAC.
Journal ArticleDOI
The specification and enforcement of authorization constraints in workflow management systems
TL;DR: A language is presented to express both static and dynamic authorization constraints as clauses in a logic program and formal notions of constraint consistency are provided to check the consistency of constraints and assign users and roles to tasks that constitute the workflow in such a way that no constraints are violated.
Journal ArticleDOI
The dimensional fact model: a conceptual model for data warehouses
TL;DR: This paper formalizes a graphical conceptual model for data warehouses, called Dimensional Fact model, and proposes a semi-automated methodology to build it from the pre-existing schemes describing the enterprise relational database.