iOS idfa 和 android 广告 ID 是否彼此唯一？
Is iOS idfa and android advertising id unique to each other?
iOS IDFA 和 android 广告 ID 是否彼此唯一？我的意思是，我能否将这两个值存储在同一列 (advertising_id) 中并确保 iOS IDFA（来自一台设备）不可能与 Android 广告 ID（来自另一台设备）？
在 iOS 中，两者都是 advertisingIdentifier and identifierForVendor are UUIDs. On the other hand, the Google Advertising ID is a text string with an unspecified format. While currently, this format appears to be a UUID as well, the documentation doesn't state what format Advertising IDs have; thus, you should assume this format may change in the future. (Be sure to review the information given in "Best practices for unique identifiers"；也许与 "advertising ID" 不同的标识符可能更适合您的目的。）
iOS IDFA 和 android 广告 ID 是否彼此唯一？我的意思是，我能否将这两个值存储在同一列 (advertising_id) 中并确保 iOS IDFA（来自一台设备）不可能与 Android 广告 ID（来自另一台设备）？
在 iOS 中，两者都是 advertisingIdentifier and identifierForVendor are UUIDs. On the other hand, the Google Advertising ID is a text string with an unspecified format. While currently, this format appears to be a UUID as well, the documentation doesn't state what format Advertising IDs have; thus, you should assume this format may change in the future. (Be sure to review the information given in "Best practices for unique identifiers"；也许与 "advertising ID" 不同的标识符可能更适合您的目的。）