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Decimal vs. Double
By Richard Rost   Richard Rost on LinkedIn Email Richard Rost   10 months ago

Decimal vs. Double Number Field Sizes in Access


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In this Microsoft Access tutorial I'm going to teach you the difference between decimal and double number types, their specifications, benefits & problems, and when you should use each of them.

Avery from Burlington, Vermont (a Platinum Member) asks: I'm new to Access. I created a field to hold the number of gallons of fuel a particular vehicle used, and selected the Decimal data type. I try typing in 5.5 and it just rounds to 5. What's the problem? I thought decimal values could have digits after the decimal point.

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Notes

  • If you are a beginner with Access, don't use the Decimal field size. Stick with Double. It's easier to deal with.
  • Decimal is specifically designed for scientific or financial applications that demand exacting precision but is more difficult to use.
  • By default, Decimal values don't allow values after the decimal point (which I think is dumb).
  • Double is a floating point value. You can store much larger numbers, but with less precision, and they are prone to rounding errors.
  • Decimal is a fixed point value. They store smaller numbers, but with exact precision, and they are not susceptible to rounding errors.

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Copyright 2024 by Computer Learning Zone, Amicron, and Richard Rost. All Rights Reserved. Current Time: 4/19/2024 8:25:46 AM. PLT: 1s
Keywords: TechHelp Access Double, decimal, floating point, fixed point, precision, scale, some data may be lost, the decimal field's precision is too small to accept the numeric you attempted to add  PermaLink  Decimal vs. Double in Microsoft Access