While quot;nowquot; is expressed in SQL as CURRENT-TIMESTAMP within queries, this value cannot bestored in the database. However, this notion of an ever-increasing current-time value has beenreflected in some temporal data models by inclusion of database-resident variables, such asquot;now,quot;...

In spite of the increasing sophistication and power of commercial spreadsheetpackages, we still lack a formal theory of spreadsheets and a methodology thataids their construction and maintenance. Using a new functional relationallanguage, this paper identifies four principal components that...

In spite of the increasing sophistication and power of commercial spreadsheetpackages, we still lack a formal theory or a methodology to support the constructionand maintenance of spreadsheet models. Using a dual logical/physicalperspective, we identify four principal components that...

Hypermedia design, as any other design activity, may be observed according to two points of view: methods whichsuggest milestones to guide the designer's work and process which concerns the actual detailed behavior of thedesigner at work. Cognitive studies assess that mental processes involved...

This paper discusses the shortcomings of unparameterizable image mapsand presents a solution to the problem through the use of PATH_INFOand textual substitution in the mapping configuration file. After some discussionon why this scheme was chosen instead of the alternatives, twoexample of actual...

We present the design of a computer-aided environment, RMCase, to support thedesign and construction of hypermedia applications. The environment is based uponthe Relationship Management methodology. MCase supports hypermedia designand development activities. Support for cognitive design...

This briefing focuses on design and development of WWW systems. I will present the principalelements of the Relationship Management Methodology which aids in the design and development ofWWW applications. RMM will be introduced via a sample application. I will also, simultaneously,demonstrate a...