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Lotus Improv is a discontinued spreadsheet program from Lotus Development released in 1991 for the NeXTSTEP platform [1] and then for Windows 3.1 in 1993. Development was put on hiatus in 1994 after slow sales on the Windows platform, and officially ended in April 1996 after Lotus was purchased by IBM.
Overview of a data-modeling context: Data model is based on Data, Data relationship, Data semantic and Data constraint. A data model provides the details of information to be stored, and is of primary use when the final product is the generation of computer software code for an application or the preparation of a functional specification to aid a computer software make-or-buy decision.
Lotus was founded in 1982 by partners Mitch Kapor and Jonathan Sachs with backing from Ben Rosen. [5] By the end of that year the company offered Executive Briefing System, presentation software for the Apple II. [6]
Lighthouse went on to develop and acquire more software products, and marketed an office suite for NeXTSTEP, which included ParaSheet (a traditional spreadsheet), Quantrix (a spreadsheet program based on Lotus Improv [2]), Diagram!, TaskMaster (a project management program), WetPaint (an image editing/retouching program), LightPlan (an OMT ...
The Lotus Development Corporation was founded by Mitchell Kapor, a friend of the developers of VisiCalc. 1-2-3 was originally written by Jonathan Sachs, who had written two spreadsheet programs previously while working at Concentric Data Systems, Inc. [6] [7] To aid its growth both in the UK and possibly elsewhere, Lotus 1-2-3 became the very ...
In information system design, data modeling is the analysis and design of the information in the system, concentrating on the logical entities and the logical dependencies between these entities Contents
Concepts are always capitalized, not only in the diagram, but also when referring to them outside the diagram. In Figure 2 all three concept types are exemplified. Part of the process-data diagram of the requirements workflow in the Unified Process is illustrated. The USE CASE MODEL is an open concept and consists of one or more ACTORS and one ...
Database model for MediaWiki 1.28.0 (2017) Different types of database models. A database model is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored, organized and manipulated. The most popular example of a database model is the relational model, which uses a ...