“Computer programs usually operate on tables of information. ... In its simplest form, a table might be a linear list of elements, when its relevant structural properties might include the answers to such questions as: Which element is first in the list? Which is last? Which elements precede and follow a given one? How many elements are in the list? A lot can be said about structure even in this apparently simple case ...”
Donald E. Knuth
Several data types have been described so far, such as numbers, ...
