In a world awash in data, information systems help provide structure and access to information. Since libraries build, manage, and maintain information systems, librarians and LIS students are often propelled onto the front lines of interactions between library users and technology. But what do librarians need to know to best meet their patron's needs? What exactly are information systems and how do they work? Information expert Ratzan uses plain language, humor, and everyday examples like baseball and arithmetic to make sense of information systems (computer hardware, software, databases,...