database - Force a constraint in primary key to have "@" in MS Access

Question

How do make sure that the primary key has one "@" in the column "email" in MS Access database, so it does not save any data without one "@" and throw exception.

I also have one column that saves domain names and it should have one "."

How do I do this validation too?

Answer 1

• 将以下“验证规则”添加到您的字段

  Like "*@*"
  

• 添加带有描述性错误消息的“验证文本”，例如

  E-mail address must contain at least one @
  

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附带说明：我强烈建议不要使用电子邮件地址作为主键。主键用于创建表之间的引用，通常应该是一个不会改变的值。但是，电子邮件地址确实会发生变化。您可能要考虑改用自动编号字段（具有某些优势的所谓“代理键” ）。