The construction of access points concerns the cataloguer’s decision on the terms a user may use in order to find and identify library items. In cataloguing tasks, the cataloguer is confronted continuously with the task of creating access points, a task that includes name choice and identification of entities.
For a cataloguer the identification process is essential and concerns the process of matching a real world thing with a reference to it (or description to it) in a document. Realizing this “matching” he/she is then able to construct the access points in order for the user to be able to access the item described. Accessing an item requires that the user is able to distinguish a work from other works of the same author, with the same title or on the same subject etc.
For these reasons, things are identified by unique keys, they are assigned unique appellations.