In response to a determination that a first logical table is to be created in a data sheet, a respective row identifier is generated and stored for individual rows of the first logical table. To indicate a relationship between a particular cell of another logical table and a particular row of the first logical table, the row identifier of the particular row is stored. After a modification of a value stored in the particular row, the row identifier is used to determine an updated value to be displayed in the particular cell of the other logical table.