Database Systems Flashcards, test questions and answers

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What is Database Systems?

A database system is a type of software that stores and organizes data in a structured manner. Database systems are used in many different applications, such as web development, business intelligence, enterprise resource planning (ERP), finance, human resources management and more. They enable users to store and retrieve data quickly and accurately. Databases provide an efficient way to search, store, manage and manipulate large amounts of data.A database system typically consists of four components: the database engine (or engine), the physical storage mechanism (or repository), the application programming interface (API) and the user interface. The engine is responsible for controlling access to the repository; it handles requests from applications to access or modify data stored in the repository. The API provides a set of rules that govern how an application can interact with a database system; it also defines how users can interact with databases through user interfaces such as graphical user interfaces or command line interfaces. The user interface provides an easy-to-use interface for users to interact with the database by entering queries or commands into its command prompt or forms.Database systems are designed to keep large amounts of data organized so that it can be easily accessed when needed. They also help improve performance by providing faster retrieval times for frequently requested information; this makes them particularly useful for applications where quick response times are important such as online retail stores or financial services firms that need real-time access to customer records or stock market information. Furthermore, databases provide security features like authentication procedures so only authorized personnel have access to sensitive information stored within them.