Database & SQL
www.tritechtrainings.com Database Management System & SQL Blog A Database is a shared collection of logically related data and description of these data, designed to meet the information needs of an organization A Database Management System is a software system that enables users to define, create, maintain, and control access to the database. Database Systems typically have high cost and they require high-end hardware configurations. Data is stored in flat files and can be accessed using any programming language. The file-based approach suffers the following problems: The dependency of a program on the physical structure of data The complex process to retrieve data Loss of data on concurrent access Inability to give access based on record (Security) Data redundancy Arithmetic Operators Operator Symbol Usage Result Addition + 15 + 5 20 Subtraction - 15 - 5 10 Multiplication * 15 * 5 75 Division / 15 / 5 3 Comparison Operators Operator Symbol Usage Resu...