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A database is a logically coherent collection of data with some inherent meaning, representing some aspect of real world and which is designed, built and populated with data for a specific purpose. It is a collection of programs that enables user to create and maintain a database. In other words it is general-purpose software that provides the users with the processes of defining, constructing and manipulating the database for various applications.
What is a Database system? The database and DBMS software together is called as Database system. What are the advantages of DBMS? What are the disadvantage in File Processing System?
Concurrent access is not possible. Describe the three levels of data abstraction? Physical level: The lowest level of abstraction describes how data are stored. Logical level: The next higher level of abstraction, describes what data are stored in database and what relationship among those data.
View level: The highest level of abstraction describes only part of entire database. Your contribution will go a long way in helping us serve more readers.
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