Library science is the application of principles and methodologies from diverse fields such as management, education, and information technology to the operation of libraries. It involves the systematic acquisition, organization, preservation, and dissemination of information resources. Cataloging, a key component of library science, refers to the creation of metadata to represent various information resources, including books, audiovisual materials, and sound recordings. This process entails generating bibliographic records that provide essential details- such as titles, creators, and subject terms- to accurately describe and categorize these resources. Cataloging is typically divided into two main types: descriptive cataloging and subject cataloging. Different approaches, evaluations and methodologies and advanced studies on library science have been included in this book. It unfolds the innovative aspects of the field which will be crucial for the holistic understanding of the subject matter. It aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline.