Evil Access Stuff
By Richard Rost
2 years ago
I'm trying to come up with a list of all of the evil stuff in Access that I have to continuously tell people NOT to do. Help me out here guys. You should never use:
- Spaces in your Object names (tables, fields, etc.) Say "OrderDetailT" not "Order Detail Table"
- Reserved words (Date, Name, etc.)
- Attachment Data Type (NEVER store attachments inside your database. See ABCD Part 5). Super Evil.
- OLE Objects or Pictures stored inside the database (see Images).
- Multi-Valued Fields
- Hyperlink Fields. Use Short Text instead.
- Google Drive (or DropBox, etc.) to share an Access database. See this page if you want remote access.
- A single shared database file on a network with multiple users opening it (Split your DB)
- AutoNumbers are NOT for You! They're for Access' internal use ONLY! Don't worry if they're out of sequence or you're missing some. If you need sequential numbers, use a custom counter.
- Switchboards. Make your own Menu Forms.
- Calculated fields in tables. Use calculated query fields instead. Tables shouldn't contain calculations.
- Lookup values in tables. Use relational combo boxes on forms instead.
- Subdatasheets in tables or queries. No. Use forms with subforms instead to show relationships. See this for more information.
- Data Macros. I'm sorry. I'll never get used to having macros inside tables. It breaks every rule that I've ever been taught about relational databases. I don't like macros to begin with. Macros in Forms are a pain. Macros in Tables are an abomination. Stick to Forms and Event Programming (VBA).
- The Append Only property for long text fields
These things are frowned upon:
- SendKeys - try not to use this if at all possible. There's almost always a better way.
- Split Forms - problems with VB, limited formatting, subform issues
- Plurals in your object names. Try to be consistent even if it doesn't sound right. CustomerT not CustomersT.
- Not commenting your code!
- Not naming all of your objects like command buttons (I'm guilty of this)
- Not backing up your database nightly!
- Not backing up offsite!
- Not backing up before a major code revision (don't lose a whole day's work)
- Third-party add-ons and references. Use internal Access objects if possible, or at least objects that come with Office.
- ActiveX Objects - unreliable
- Navigation Forms - use a Main Menu form, or my subform technique in ABCD Part 2
- Tab Controls. I just don't like them. They're a pain to use.
- From @NoLongerSet - Overuse of DoCmd.SetWarnings False and On Error Resume Next - my reply: Yeah... I pretty much only use SetWarnings around a RunSQL command (and even then I try to use db.Execute if possible). Resume Next is lazy error handling, but sometimes I like it if I don't feel like doing something the LONG way. LOL.
- Cascade Updates are dumb. Cascade Deletes are dangerous! Handle it yourself in VBA/SQL code.
- Layout Mode and groupings of controls. Sure, use them, arrange your controls how you like, but then right-click and Remove Layout when you're done with it. Don't leave it on.
Be careful of this stuff:
- Adding VBA references to outside libraries. Version numbers and DLLs can change in future Office editions.
What can you think of? I know I've mentioned a lot of things in my 20+ years of teaching Access classes. But you know me... old brain can't rememeber it all...
Comments for Evil Access Stuff
The following is a paid advertisement
Computer Learning Zone is not responsible for any content shown or offers made by these ads.
Copyright 2023 by Computer Learning Zone, Amicron, and Richard Rost. All Rights Reserved.
Current Time: 10/1/2023 3:08:38 AM.