"So, a valid unquoted attribute value in CSS is any string of text that is not the empty string, is not just a hyphen (-), consists of escaped characters and/or characters matching /[-_\u00A0-\u10FFFF]/ entirely, and doesn’t start with a digit or two hyphens or a hyphen followed by a digit." ; For the Selection type parameter, choose how the selection is applied and what to do if a selection already exists in the view. attributeFilter2: Another attribute filter, reducing the selection even more attributeFilterN: As many more attribute filters as necessary Example: When you select “T-shirt”, the next attribute would be “T-shirt colour”. To select records using an attribute query, follow these steps: Click Table Options in the table you want to query and click Select By Attributes . It specifies that the user is allowed to select more than one value that presents in multiple Attribute is a Boolean Attribute. A use case would be where you were using a data attribute to store some data anyway. Syntax: