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Online public access catalog. The online public access catalog ( OPAC ), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.
OCLC, Inc., doing business as OCLC, [ 4] is an American nonprofit cooperative organization "that provides shared technology services, original research, and community programs for its membership and the library community at large". [ 2] It was founded in 1967 as the Ohio College Library Center, then became the Online Computer Library Center as ...
A catalog merchant ( catalogue merchant in Commonwealth English) is a form of retailing. The typical merchant sells a wide variety of household and personal products, with many emphasizing jewelry. Unlike a self-serve retail store, most of the items are not displayed; customers select the products from printed catalogs in the store and fill out ...
The Card Catalog at the Library of Congress. A library catalog (or library catalogue in British English) is a register of all bibliographic items found in a library or group of libraries, such as a network of libraries at several locations. A catalog for a group of libraries is also called a union catalog.
Mail order. Mail order is the buying of goods or services by mail delivery. The buyer places an order for the desired products with the merchant through some remote methods such as: Then, the products are delivered to the customer. The products are usually delivered directly to an address supplied by the customer, such as a home address, but ...
A service catalog (or catalogue ), is an organized and curated collection of business and information technology services within an enterprise. Service catalogs are knowledge management tools which designate subject matter experts (SMEs) who answer questions and requests related to the listed service. Services in the catalog are usually very ...
An online shop evokes the physical analogy of buying products or services at a regular "brick-and-mortar" retailer or shopping center; the process is called business-to-consumer (B2C) online shopping. When an online store is set up to enable businesses to buy from another businesses, the process is called business-to-business (B2B) online shopping.
E-commerce (electronic commerce) is the activity of electronically buying or selling products on online services or over the Internet.E-commerce draws on technologies such as mobile commerce, electronic funds transfer, supply chain management, Internet marketing, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems.