Scanning and indexing:

In database design, a list of keys (or keywords), each of which identifies a unique record. Indices make it faster to find specific records and to sort records by the index field -- that is, the field used to identify each record.

To create an index for a database, or to find records using an index.

Imaging: Document imaging is the practice of capturing documents (usually by scanning) and storing them as digital images. A complete digital document imaging system provides the ability to capture, index, search, recall, view, and print documents. Unlike most computer applications that can only store information entered as binary data structured in their own special format, an imaging system can store and retrieve any type of scanned document regardless of how it was created (printed, typed, hand-written, etc). An imaging system stores information (from business cards to letters, forms, pictures, and even large maps and drawings) as it exists in the real world.

  Information stored digitally takes up a fraction of the space consumed by paper. Large volumes of information can be accessed instantly over a network or Internet, or it can be made portable when published to CD or DVD disc libraries. Digitally stored information can be securely backed-up to safeguard against loss of information in the event that something happens to the original documents (BCP). A good imaging system can also provide control over who can access and work with information stored in it.

  A good imaging solution is the foundation for future forms processing and workflow functions. Imaging has many different uses in virtually any business, regardless of type or size. A good imaging system can be up and running with a minimum of customization and training. An imaging system can be integrated to work with other applications. As an application a good imaging solution usually represents one of the easiest and fastest returns on your technology investment.