So far we have looked at a number of aspects of the theory of classification, at the central activity of applying particular schemes, and, of course, at how the two are related. Another important factor is the management of the scheme, both at the editorial level and in the local situation.

The management and maintenance of schemes

It's important for the institutional user to be aware of the arrangements in place for the upkeep of the classification system. The classification is a major tool in the organization of the library (more important than is generally acknowledged) and you need to be assured that it will be maintained and kept current, and that its editors will respond to the changing needs of collections and to developments in technology. We'll consider the different publication formats in some detail below, but the broader concerns of the currency and stability of the classification are independent of any particular version.

The general management of classifications

Most schemes are managed by an institution or organization that ensures its continued existence. The larger and more stable this organization, the more likely it is to support the classification well. The biggest classifications, such as DDC and LCC, have a considerable machine behind them that can accommodate the general running of the classification, its publication, the dissemination of information to users, the promotion of the scheme, the creation of training materials, the provision of bibliographic services, and research into the theory and applications of classification. The availability of all these secondary features can make the classification more attractive to the end-user and greatly enhance its usefulness. All of them additionally serve to create a sense of community among users and to promote loyalty to the system – they're all good public relations exercises.

Revision and maintenance

The most important of these operations, as far as the classification itself is concerned, is the ongoing upkeep of the scheme, particularly the revision of the scheme to accommodate new subjects. It's absolutely essential to have robust mechanisms for identifying and incorporating new topics in the literature, and for informing users about such additions and amendments. The reverse process, the pruning of obsolete terms, and, in some cases, removing biased or politically incorrect terminology and structures, needs also to be in place.