There are two ways to delete records in ArcMap. You can open the attribute table and delete records, or you can use the Delete Features tool (only on spatial data). Deleting records within the Table window always takes place in an edit session. You can delete features with the geoprocessing tool outside an edit session; however, you will not be able to undo this operation.
- Click the Editor menu on the Editor toolbar and click Start Editing.
- Right-click the table or layer in the table of contents and choose Open Attribute Table.
- Select the records you want to delete.
Press and hold the CTRL key while clicking to select more than one record.
- Press the DELETE key on the keyboard.
The geographic features associated with the records, if any, are also deleted.