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4D Technical Articles

All articles are written by Walt Nelson; some articles are Copyright 4D Inc. or Dimensions Tech Journal. Posted with permission - see below*.

Featured Download - August 2004
Understanding Queries in 4D: the Funnel Concept by Walt Nelson


ARTICLES BY CATEGORY

4D Server Development

  Part 1: Advantages of 4D Server Multi-User Development by Walt Nelson
  Part 2: Setting Up a Multi-Developer Password System  by Walt Nelson
  Part 3: Naming Conventions for Multi-Developer 4D Projects  by Walt Nelson

4D Memory Management

  Part 1: Keeping the Memory Clean: Designing Memory-Efficient Forms  by Walt Nelson
  Part 2: Keeping the Memory Clean: Writing Memory-Efficient Code   by Walt Nelson

Optimizing Record Selections

  Part 1: Under the Hood of the 4D Data File by Walt Nelson &  Jean-Pierre Ribreau
  Part 2: Under the Hood of the 4D Data File Pt2   by Walt Nelson & Jean-Pierre Ribreau

Optimizing Performance

  Part 1: Expanding the Concept of a Keywords Subfile  by Walt Nelson
  Part 2: Using 4D's Built-in Relational Search Engine  by Walt Nelson

Backup and Recovery strategies

  Part 1: General Principles of Backup & Recovery  by Walt Nelson
  Part 2: Automatic Backup and Mirroring with 4D Backup  by Walt Nelson
Webserver_Monitor by Walt Nelson 
    (A 4D application to monitor servers 24 hours a day, 7 days a week.  I use this application to monitor my clients' Web Servers. If the server goes down, this application automatically re-starts it.)

Intermediate Programming Topics

  Manipulating Arrays, Strings, and Dates with 4th Dimension  by Walt Nelson
Example Database (the screens are ugly, but they work!) Macintosh Windows
  Using the 4D Method Flowchart Editor  by Walt Nelson
  4D Conversions: V3-V6, Mac-Win, 4D Write to 6.5/Later  by Walt Nelson 
Understanding the Relational Model by Walt Nelson
     (A sample lesson from the course "4D Boot Camp for Beginners: Getting Up-to-Speed in 4D")
Understanding Queries in 4D: the Funnel Concept by Walt Nelson

Subforms and Hierarchical Lists

  Sayonara Arealist: Creating Subforms in Native 4D  by Walt Nelson (a tutorial on subforms)
  Using 4D Hierarchical Lists as Space-Savers  by Walt Nelson (HL's & how they work)

Advanced Programming Topics

  The RESOLVE POINTER command  by Walt Nelson
  The EXECUTE command  by Walt Nelson
  Understanding the Foundation Shell by Walt Nelson
  Converting a FileMaker Database to 4D - A Case Study  by Walt Nelson
  Unleashing the Power of 4D Write  by Walt Nelson
Writing 4D Code in the Zone by Walt Nelson 
  The 4D Search Engine and Set Theory  by Walt Nelson
Webserver_Monitor by Walt Nelson 
    (A 4D application to monitor servers 24 hours a day, 7 days a week.  I use this application to monitor my clients' Web Servers. If the server goes down, this application automatically re-starts it.)

The Business of 4D Consulting

  Should You Create a Vertical Market Product with 4D?  by Walt Nelson
  The Mobile Consultant's Toolkit A guide for traveling consultants  by Walt Nelson
  Seven Success Principles  by Walt Nelson

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*Some of these writings were previously been published either as 4D Technical Notes or as articles
 in the Dimensions Tech Journal.


Copyright 2002

Walt Nelson & Associates
10175 S. Tantau Ave.
Cupertino, CA 95014

Phone: (408) 832-7225
Fax: (408) 257-6054
E-mail: Walt@4DMentor.com