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What is column validation?
Column Validation ensures that the data was entered correctly in a given column.
Navigate to the list or library you want to create a column in.
Column Validation works by returning true or false. Starting our formula with an AND statement allows us to pass multiple conditions (also returning true or false) and will return true only if all the conditions return true. This allows us to do multiple checks and ensure they all validate correctly.
What is a SharePoint lookup field?
A lookup field in SharePoint contains values looked up from another list in the same SharePoint site. Strictly speaking, the field contains only the ID from the item in the source list, and the value(s) is/are looked up whenever the field is displayed. The lookup field can also be used to display multiple field values from the target list items.
So to change the Name of the Column “Name” you need to use SharePoint Designer. The first step is to navigate to the SharePoint Library within SharePoint Designer . Within the Library summary page click on Edit List Columns within the Customization Artefact. Then there is 3 options to renaming the “Name” column Right click column then select rename.
So if you want to remove the “title” column permanently, follow the steps given below: Go to the Settings->List Settings->Advanced settings Check the “yes” Radio button for “Allow management of Content types” and hit OK Setp 2 will give you “Content types” option on the settings page which will have “Item” content type Clicking “Item” will give following page