In computing, a form is a window or screen that contains numerous fields or spaces to enter data. Forms can be used to create user interfaces to either enter data or to manipulate data. In Microsoft Access, a form is a database object that can be used to create a user interface for a database application. A "bound" form is one that is directly connected to a data source such as a table or query and can be used to enter, edit, or display data from that data source. An "unbound" form does not link directly to a data source but still contains command buttons, labels, or other controls that you need to operate your application. Forms are important tools for the usability of a database application. Users do not have to be familiar with the internal structure of the database but instead can take advantage of a form to ensure usability, even that they are entering information correctly. Forms can also be used to control access to data, such as which fields or rows of data are displayed.