Customer database is a system responsible for collecting and storing customer information such as purchase history, personal details, contact information, etc. in order to provide quick and useful information for various uses. In other words, organizations collect information about their consumers to help them understand consumers' performance in purchasing a product. In the past, organizations struggled to collect customer data because it required a lot of time and effort. Nowadays, customer databases are used by most organizations to help collect and analyze consumer information more easily and flexibly. Identifying target customers, strengthening competitive advantage, and improving product development are three benefits of using a customer database. The first benefit of using customer databases is the recognition of target customers. When an organization sells products or provides services without knowing the type of consumers it is dealing with, it may face many problems, such as having unclear marketing plans for expansion. Furthermore, marketing processes can be difficult for companies if market segmentation is lacking, the process of dividing customers into groups that have similar needs, which can lead organizations to have a high risk of wasting time, money, energy or lose business. Therefore, organizations must have specific and accurate information about their consumers' needs in order to target their market segment. For example, Rudarakanchana (2013) wrote that even though 25% of McDonald's total breakfast sales are purchased by US customers, Asian and European customers avoid the breakfasts offered by McDonald's, which is something McDonal... in middle of paper. ......abase can help organizations in the process of targeting their customers more accurately and sufficiently. Furthermore, from the use of customer databases, organizations can gain a competitive advantage by satisfying their customers. Additionally, customer databases can help organizations develop and improve their products by knowing customer attitudes and changes that are occurring in technological fields. In the future, organizations could develop a customer database system to improve many different aspects of their business. In the future, organizations could develop a customer database system to help organizations in the classification process access data quickly, accurately and easily in their business. In the future, organizations could develop a customer database system to improve many different aspects of their business.