Alpha Software Mobile Development Tools:   Alpha Anywhere    |   Alpha TransForm subscribe to our YouTube Channel  Follow Us on LinkedIn  Follow Us on Twitter  Follow Us on Facebook



The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
  • Be professional in your conduct
  • Be kind to others
  • Be constructive when giving feedback
  • Be open to new ideas and suggestions
  • Stay on topic

Be sure all comments and threads you post are respectful. Posts that contain any of the following content will be considered a violation of your agreement as a member of the Alpha Software Forum Community and will be moderated:
  • Spam.
  • Vulgar language.
  • Quotes from private conversations without permission, including pricing and other sales related discussions.
  • Personal attacks, insults, or subtle put-downs.
  • Harassment, bullying, threatening, mocking, shaming, or deriding anyone.
  • Sexist, racist, homophobic, transphobic, ableist, or otherwise discriminatory jokes and language.
  • Sexually explicit or violent material, links, or language.
  • Pirated, hacked, or copyright-infringing material.
  • Encouraging of others to engage in the above behaviors.

If a thread or post is found to contain any of the content outlined above, a moderator may choose to take one of the following actions:
  • Remove the Post or Thread - the content is removed from the forum.
  • Place the User in Moderation - all posts and new threads must be approved by a moderator before they are posted.
  • Temporarily Ban the User - user is banned from forum for a period of time.
  • Permanently Ban the User - user is permanently banned from the forum.

Moderators may also rename posts and threads if they are too generic or do not property reflect the content.

Moderators may move threads if they have been posted in the incorrect forum.

Threads/Posts questioning specific moderator decisions or actions (such as "why was a user banned?") are not allowed and will be removed.

The owners of Alpha Software Corporation (Forum Owner) reserve the right to remove, edit, move, or close any thread for any reason; or ban any forum member without notice, reason, or explanation.

Community members are encouraged to click the "Report Post" icon in the lower left of a given post if they feel the post is in violation of the rules. This will alert the Moderators to take a look.

Alpha Software Corporation may amend the guidelines from time to time and may also vary the procedures it sets out where appropriate in a particular case. Your agreement to comply with the guidelines will be deemed agreement to any changes to it.

Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.

The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.

When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.

A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.

If you forgot to attach your files to your post, please do NOT create a new thread. Instead, reply to your original message and attach the file there.

When attaching screen shots, it is best to attach an image file (.BMP, .JPG, .GIF, .PNG, etc.) or a zip file of several images, as opposed to a Word document containing the screen shots. Because Word documents are prone to viruses, many message board users will not open your Word file, therefore limiting their ability to help you.

Similarly, if you are uploading a zipped archive, you should simply create a .ZIP file and not a self-extracting .EXE as many users will not run your EXE file.
See more
See less

Limits to number of set linked tables?

  • Filter
  • Time
  • Show
Clear All
new posts

  • Limits to number of set linked tables?

    Can AlphaFive be used to develop forms like the attached screen prints at an acceptable level of performance?

    Forum member Tom Cone yesterday noted that my application set SetPerson had 11 tables and suggested that this might be unworkable in a production environment. I followed up on his recommendation and read "Simplified Alpha Five version 4 set and application design".

    My problem is that I'm just getting started and planned to add perhaps another 10 to 15 tables to the set before I was finished.

    This is because in even low-end CRM applications, the linking of multiple objects is taken for granted.

    Can AlphaFive be used to develop screens like the attached at an acceptable level of performance?

    The first screen is from lowest-common-denominator contact manger ACT! 2009, which features 11 tabs each of which is populated by 1:M or M:M relationships with other objects. For example,

    Notes tab:
    1:M -- a Note is linked to a single person. Person_id can be included in the note table (one link)

    Contacts tab:
    M:M -- the two persons are linked in a tblPersonPerson table which in turn is linked to tblPerson to display the related contact's name (two links)

    Does Alpha Five have enough horsepower to do this?

    Or take a look at screen 2, which shows the tabs for another low end CRM package Centerbase.

    This package allows mutiple telephones and addresses. In other words, telephones, address, are yet additional tables and set links.

    I haven't shown a screenprint for Goldmine but it behaves similarly.

    Or realistically, is Alpha going to choke? I believe that both Act! 2009 and Centerbase were developed with Microsoft Visual Studio and Goldmine with a Borland product. I can't find a single commercial CRM package developed with Alpha Five, even though several exist for FileMaker Pro.

    Note that the tabs are used mostly to display links, rather than to maintain the related object.

    For example, the Cases tab displays the cases that are related to the person, but clicking on the record tblPersonCase (intersection record) typically launches a separate form to maintain Case information. One Person may be assigned to many cases and one cases may be assigned to many people.

    Bob McGaffic
    Pittsburgh, PA
    Last edited by rmcgaffic; 05-18-2009, 01:48 PM.

  • #2
    Re: Limits to number of set linked tables?

    I think the overall scenario has to be considered to even know for many things can cause problems/issues in an application--is it a multi-user app, is it going to be used over a network, a mapped drive, are there a multitude of calculations on the forms/browses (and how are they derived).

    Many here have gone the button route instead of a tabbed object due to Alpha having to refresh all the tab's tables all the time which caused speed issues (the gist of it I believe). Most likely you will hear from a few of these individuals as well.....or do a search on Tabbed objects....maybe with DaveM as part of the search parameters as I know he went from tabs to buttons and now pretty much swears by them.

    My largest set so far is 14 tables....but is only used for reports in which all of these tables pretty much have to be there. That particular app only has 30 tables and 15 sets (Most have 2-4 tables, one has 6).

    I'm fairly certain Tom was alluding to these issues and probably many more when he cautioned you in the other thread about using complex (large) sets.
    Last edited by MikeC; 05-19-2009, 02:23 AM.
    It is only when we forget all our learning that we begin to know.
    It's not what you look at that matters, it's what you see.
    Henry David Thoreau


    • #3
      Re: Limits to number of set linked tables?


      initially i had a set with 16 tables and the form it was based on was very slow, i then split it down to around 4 tables per set, speed is far better and i just use buttons to navigate from one form to another.

      i didnt have many calculated fields either (around 12).