Define CAS and SDI services. Explain characteristics of CAS and SDI services.

Computerized Assisted Search (CAS)

Computerized Assisted Search (CAS) is a service provided by libraries to assist users in locating information resources efficiently and effectively. It involves the use of computer systems and databases to facilitate the search process. CAS encompasses various techniques and tools to help users find relevant materials based on their information needs.

Characteristics of CAS:

1. Database Access: CAS relies on access to electronic databases containing bibliographic records, abstracts, and sometimes full-text documents. These databases are often subscription-based and cover a wide range of subjects.

2. Search Capabilities: CAS systems offer advanced search capabilities, allowing users to perform complex queries using keywords, Boolean operators, truncation, and other search techniques. This enables users to retrieve precise results matching their criteria.

3. User Interface: CAS systems provide user-friendly interfaces designed to facilitate search navigation. They often feature intuitive search forms, filters, and browsing options to enhance the user experience.

4. Customization: CAS services can be customized to meet the specific needs of users and institutions. Users may ________ ______ __________ ____ ___ _____ _______.
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