The emergence of digital age has added a new dimension to information technology in knowledge Society which gave birth to the new concepts of Digital Libraries (DLs), Knowledge Management (KM), and archiving of indigenous culture and heritage materials.
So, The Digital Libraries have emerged as a crucial component of global information infrastructure, adopting the latest Information and Communication Technology (ICT) to promote an organizational structure that encourages communication and resource sharing
In the digital era, people can get information easily because of the development of information technology and the internet. They can discover interesting information and digital content via surfing on the internet. When users access the digital library, they often input appropriate keywords and use the “Search” function to discover the information that they want. However, the results do not always satisfy users