DBMS Architecture and Data Independence
Three important characteristics of the database approach are (1) insulation of programs and data (program-data and program-operation independence); (2) support
Read moreThree important characteristics of the database approach are (1) insulation of programs and data (program-data and program-operation independence); (2) support
Read moreA primary goal of a database system is to retrieve information from and store new information in the database. People
Read moreWe can define a data dictionary as a DBMS component that stores the definition of data characteristics and relationships. You
Read moreA database system provides a data definition language to specify the database schema and a data manipulation language to express
Read moreUnderlying the structure of a database is the data model: a collection of conceptual tools for describing data, data relationships,
Read moreDatabases change over time as information is inserted and deleted. The collection of information stored in the database at a
Read moreDanger of a Overkill: For small and simple applications for single users a database system is often not advisable. Complexity:
Read moreUsing a DBMS to manage data has many advantages: Data independence: Application programs should be as independent as possible from
Read moreThe database approach has some very characteristic features which are discussed in detail below: Concurrent Use A database system allows
Read moreConsider part of a savings-bank enterprise that keeps information about all customers and savings accounts. One way to keep the
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