A database is an organized collection of data.[1] A relational database, more restrictively, is a collection of schemas, tables,queries, reports, views, and other elements. Database designers typically organize the data to model aspects of reality in a way that supports processes requiring information, such as (for example) modelling the availability of rooms in hotels in a way that supports finding a hotel with vacancies. A database-management system (DBMS) is a computer-softwareapplication that interacts with end-users, other applications, and the database itself to capture and analyze data. A general-purpose DBMS allows the definition, creation, querying, update, and administration of databases. A database is not generally portable across different DBMSs, but different DBMSs can interoperate by using standards such as SQLand ODBC or JDBC to allow a single application to work with more than one DBMS. Computer scientists may classify database-management systems according to the database models that they support; the most popular database systems since the 1980s have all supported the relational model - generally associated with theSQL language.[disputed ] Sometimes a DBMS is loosely referred to as a "database".
Top 10 Database interview questions and answers - YouTube |
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